23 Great Metal Marble Runs For Adults

14 Apr 2019

Umiwe Magic Maze Ball For Kids Adults Mini 3D Gravity Maze Bead Marble Ball Intelligence Idea Maze Game Toys Challenging Labyrinth Gifts For Kids And Adults

Umiwe Magic Maze Ball For Kids Adults Mini 3D Gravity Maze Bead Marble Ball Intelligence Idea Maze Game Toys Challenging Labyrinth Gifts For Kids And Adults
Umiwe Magic Maze Ball For Kids Adults Mini 3D Gravity Maze Bead Marble Ball Intelligence Idea Maze Game Toys Challenging Labyrinth Gifts For Kids And Adults

Umiwe Magic Maze Ball For Kids Adults Mini 3D Gravity Maze Bead Marble Ball Intelligence Idea Maze Game Toys Challenging Labyrinth Gifts For Kids And Adults. Exercise: The puzzle is neither too hard nor too easy. Three colors represent different levels of difficulty and are suitable for people of all ages. Feature- Brain development toy, help children's IQ development. Practice people's balance ability, teach them to build up patience and explore for the final victory. Puzzles for Kids Ages 6 Years Up, Magic Gravity Memory Sequential Brain Teasers Game for Kids and Adults is Best. 3 D magic bead maze ball puzzle games toy gifts for kids adults boys Girls. Flip twist and spin your way to the finish line. Safe to Use: UMIWE Magic Maze Ball make of high quality plastic, Environment friendly, Strong and durable. Durable and Safe to play with. Turn the sphere to run the small metal ball. Find the right way to go and get the goal. Made with ABS Environmental Materials. New Style Puzzle Ball Game: No loneliness, More interesting all the time; No need to set-up, clean-up or install batteries. How to play: Find the small metal ball in one side and star the challenge. More Difficult and Greater Challenge 's Maze Ball: Easy to Carry, Easy to Use, But Hard to Master! Perfect size: Diameter: 10.2 CM (4.0 Inch), easy to carry, Feel free to use and relax.

Grafix Marble Run

Grafix Marble Run
Grafix Marble Run

Grafix Marble Run. watch the marbles race and run. content 29 structural, pieces 2 launching areas 4 landing areas 15 marbles instruction sheet.

The Learning Journey Techno Gears Marble Mania Skytrax

The Learning Journey Techno Gears Marble Mania Skytrax
The Learning Journey Techno Gears Marble Mania Skytrax

The Learning Journey Techno Gears Marble Mania Skytrax. The Learning Journey Techno Gears Marble Mania Skytrax.

Vnimax Marble Run Toy Marble Run Race Coaster Set DIY Building Blocks Construction Toy For Kids With 30 Glass Marbles

Vnimax Marble Run Toy Marble Run Race Coaster Set DIY Building Blocks Construction Toy For Kids With 30 Glass Marbles
Vnimax Marble Run Toy Marble Run Race Coaster Set DIY Building Blocks Construction Toy For Kids With 30 Glass Marbles

Vnimax Marble Run Toy Marble Run Race Coaster Set DIY Building Blocks Construction Toy For Kids With 30 Glass Marbles. Assemble these blocks with your children and make wonderful memory together. This Set of blocks can improve kids hands-on ability, creativity, exploring capability, hand to eye coordination, color discrimination, and sparkle their imagination. Helpful for Children's Development? Item Weight: 1.4 lb Color: As shown in the pictures Age for: age 3 up Material: Plastic Size: 11.7 3.5 8 in (approx). vinmax Marble Run Toy DIY Building Blocks Construction Toy Marble Race Run Maze Balls Track Set This is a creative toy for your kid! 105 Pcs marble run race coaster set contains curved tracks, ramps and chutes that fit together in countless variations. Careshine Marble Run with pieces that go together and pull apart with ease is a favorite toy among youngsters. Once the course is assembled, drop the marbles in and watch them go. The colors may be different due to different batch. This Marble Run Coaster Set is an ideal gift for kids age Building various tracks and see marbles go up, down, all around, and fast! There are different parts you can put together by using your creativity, logic, also concentration, so it's a good educational toy for the kid. The brightly colored marbles drop through the spinners stack and chutes. Small parts not for children under 3 years. Hands-on ability be trained. This imaginarium deluxe marble race is the best way to get your kids interested in building. and beautiful appearance can stimulate kid's brain and thought. Use your imagination create your own mode! Contains a total of 105 pcs small parts (75 pcs blocks and 30 pcs marbles). Do not need screws, so no other tools are employed. Tracks centrifugal funnels, U-turn slides, windmills, straight slides and gradient slides, height 70 cm or so for much fun!

Quercetti Skyrail Suspension Marble Run

Quercetti Skyrail Suspension Marble Run
Quercetti Skyrail Suspension Marble Run

Quercetti Skyrail Suspension Marble Run. Comes with a detailed instruction booklet. Adults and children will love watching the marbles race down and around. This 310-piece set allows you to build 33 feet of track with rails that are suspended in mid-air and attached with a series of ties and anchors. 3 different types of marbles. Perfect for demonstrating gravity, speed, inertia, weight and other principles of mechanics and physics. Let your imagination take hold as you build your very own roller coaster.

Mega Marbles TIGER SHARK MARBLES NET 1 Shooter Marble 24 Player Marbles

Mega Marbles TIGER SHARK MARBLES NET 1 Shooter Marble 24 Player Marbles
Mega Marbles TIGER SHARK MARBLES NET 1 Shooter Marble 24 Player Marbles

Mega Marbles TIGER SHARK MARBLES NET 1 Shooter Marble 24 Player Marbles. Mega Marbles - TIGER SHARK MARBLES NET (1 Shooter Marble 24 Player Marbles). Electric Eel Mega Marbles.

Mega Marbles DRAGONFLY MARBLES NET 1 Shooter Marble 24 Player Marbles

Mega Marbles DRAGONFLY MARBLES NET 1 Shooter Marble 24 Player Marbles
Mega Marbles DRAGONFLY MARBLES NET 1 Shooter Marble 24 Player Marbles

Mega Marbles DRAGONFLY MARBLES NET 1 Shooter Marble 24 Player Marbles. Fun themes and awesome colors. The Shooter marble is approx. Mega Marble- 24 Collectible Marbles, 1 Shooter, Net bag- Dragonfly Game net a colorful themed header card One Shooter Marble 24 Player Marbles 100% Glass. 1", in diameter Player marbles are approx. 5 / 8", in diameter.

Livoty DIY Marble Run Coaster Maze Toy Hanmun DIY Marble Race Toy 91 Piece

Livoty DIY Marble Run Coaster Maze Toy Hanmun DIY Marble Race Toy 91 Piece
Livoty DIY Marble Run Coaster Maze Toy Hanmun DIY Marble Race Toy 91 Piece

Livoty DIY Marble Run Coaster Maze Toy Hanmun DIY Marble Race Toy 91 Piece. Follow the instructions carefully, Solid plastic pieces that stick together and are easy for kids to play with. The pieces are well constructed and the pieces make it more exciting to watch where your marble will fall. Made of enviromental plastic, suitable for 3 years old. A good starter set with lots of differently amusing pieces, Set up multiple marble entry points to create an exciting marble coaster race. It's a great cooperative activity for kids to do with the adults in the family. The pieces are well constructed and the pieces make it more exciting to watch where your marble will fall Made of enviromental plastic, suitable for 3 years old Content: A set Deluxe race. Deluxe race game with 29 bright colored pieces of various shapes (curves, ramps and chutes). Quantity: 1 Set Deluxe race game with 29 bright colored pieces of various shapes (curves, ramps and chutes) Follow the instructions carefully, Solid plastic pieces that stick together and are easy for kids to play with A good starter set with lots of differently amusing pieces, Set up multiple marble entry points to create an exciting marble coaster race It's a great cooperative activity for kids to do with the adults in the family.

Fityle 100 PCS 16Mm Colorful Glass Marbles Kids Marble Run Game Marble Solitaire Toy Chinese Checkers Accessories Vase Filler Fish Tank Home Decor Red As Described

Fityle 100 PCS 16Mm Colorful Glass Marbles Kids Marble Run Game Marble Solitaire Toy Chinese Checkers Accessories Vase Filler Fish Tank Home Decor Red As Described
Fityle 100 PCS 16Mm Colorful Glass Marbles Kids Marble Run Game Marble Solitaire Toy Chinese Checkers Accessories Vase Filler Fish Tank Home Decor Red As Described

Fityle 100 PCS 16Mm Colorful Glass Marbles Kids Marble Run Game Marble Solitaire Toy Chinese Checkers Accessories Vase Filler Fish Tank Home Decor Red As Described. to pick and in our - Set of 100 pieces glass marbles in - Great for Chinese Checkers, Collectors or a Marble Run that boost your child's hand-eye coordination and develop fine motor skills. Set of game replacment marbles: playing with marbles is a cheerful tradition activity that will keep your little ones entertained for hours. Material: Glass - Size (Dia), Approx 16 mm / 0.63 inch - Quantity: 1 set / 100 pcs - Color: as picture shown - CHOKING HAZARD - Small parts, please use under supervision of parents. Size (Dia), Approx 16 mm / 0.63 inch. Set of game replacment marbles: playing with marbles is a cheerful tradition activity that will keep your little ones entertained for hours.

Natural Earth Marble

Natural Earth Marble
Natural Earth Marble

Natural Earth Marble. Marble Made Of Recycled Glass. More Than 50 Rivers, Forests, Icecaps, Deserts Shadow Relief Mountain Ranges Are Visible. Geographically Accurate Full Color Continents In Amazing Detail. Planet on Earth Marble Set Of 3. Blue Earth Marble With Green Continents, Recycled Glass, 5 In A Pouch, 1 Inch Diameter. Blue Earth Marble With Natural Earth Continents, Recycled Glass By Shasta Vis. Blue Earth Marble With Natural Earth Continents, Recycled Glass, 5 In A Pouch, 1 Inch Diameter. Blue Earth Marble With 22 k Gold Continents, Recycled Glass, 1 Inch Diameter. Blue Earth Marble With 22 k Gold Continents, Recycled Glass, Half Inch Diameter. Marbles Identification and Price Guide. Earth, Mars, Moon To Scale Marble Box Set. Natural Earth Marble 0.9 inch Translucent Blue Marble Made Of Recycled Glass. Natural Earth Marble 0.9 inch Translucent Blue.

Marbureka Marble Run Set 45 Piece Marble Run Set

Marbureka Marble Run Set 45 Piece Marble Run Set
Marbureka Marble Run Set 45 Piece Marble Run Set

Marbureka Marble Run Set 45 Piece Marble Run Set. shoot through the chicanes. Suitable for ages 3. whizz past the paddles. MARBLE RUN SET, MARBUREKA 45. Loop-the-loop windmill spirals and chicanes. Plunge into the dropper. A build and learn marble run game for active young minds. 45 buildable pieces.

Umiwe Magic Maze Ball For Kids Adults Mini 3D Gravity Maze Bead Marble Ball Intelligence Idea Maze Game Toys Challenging Labyrinth Gifts For Kids And Adults

Umiwe Magic Maze Ball For Kids Adults Mini 3D Gravity Maze Bead Marble Ball Intelligence Idea Maze Game Toys Challenging Labyrinth Gifts For Kids And Adults
Umiwe Magic Maze Ball For Kids Adults Mini 3D Gravity Maze Bead Marble Ball Intelligence Idea Maze Game Toys Challenging Labyrinth Gifts For Kids And Adults

Umiwe Magic Maze Ball For Kids Adults Mini 3D Gravity Maze Bead Marble Ball Intelligence Idea Maze Game Toys Challenging Labyrinth Gifts For Kids And Adults. Find the right way to go and get the goal. Made with ABS Environmental Materials. Puzzles for Kids Ages 6 Years Up, Magic Gravity Memory Sequential Brain Teasers Game for Kids and Adults is Best. Safe to Use: UMIWE Magic Maze Ball make of high quality plastic, Environment friendly, Strong and durable. Flip twist and spin your way to the finish line. Practice people's balance ability, teach them to build up patience and explore for the final victory. Durable and Safe to play with. 3 D magic bead maze ball puzzle games toy gifts for kids adults boys Girls. Exercise: The puzzle is neither too hard nor too easy. Three colors represent different levels of difficulty and are suitable for people of all ages. Feature- Brain development toy, help children's IQ development. New Style Puzzle Ball Game: No loneliness, More interesting all the time; No need to set-up, clean-up or install batteries. Turn the sphere to run the small metal ball. How to play: Find the small metal ball in one side and star the challenge. More Difficult and Greater Challenge 's Maze Ball: Easy to Carry, Easy to Use, But Hard to Master! Perfect size: Diameter: 10.2 CM (4.0 Inch), easy to carry, Feel free to use and relax.

Fityle 5Pieces Glass Marbles Home Collectable 25Mm Handmade Marble

Fityle 5Pieces Glass Marbles Home Collectable 25Mm Handmade Marble
Fityle 5Pieces Glass Marbles Home Collectable 25Mm Handmade Marble

Fityle 5Pieces Glass Marbles Home Collectable 25Mm Handmade Marble. High-strength, low wear, good chemical stability. Enjoy playing the Traditional marble game with your friends with this Glass Marbles Set. Please make sure you do not mind before you bid. These Fun Toys can also be a material used for crafts and arts, science and math. Enjoy playing the Traditional marble game with your friends with this Glass Marbles Set - These Fun Toys can also be a material used for crafts and arts, science and math. Material: Glass - Marbles Diametre: 25 mm / 0.98 inch 5 Pcs Glass Marbles Please allow 1-3 cm due to manual measurement. Marbles Diametre: 25 mm / 0.98 inch.

Solar Marble Machine A Buildable Solar Powered Marble Machine Also Known As The Perpetual Motion Marble Kit

Solar Marble Machine A Buildable Solar Powered Marble Machine Also Known As The Perpetual Motion Marble Kit
Solar Marble Machine A Buildable Solar Powered Marble Machine Also Known As The Perpetual Motion Marble Kit

Solar Marble Machine A Buildable Solar Powered Marble Machine Also Known As The Perpetual Motion Marble Kit. It can be powered either by sunlight or even by indoor light. DIY KIT: A Do It Yourself kit that you can assemble on your own. Solar Marble Machine a Buildable Solar Powered Marble Machine Also Known As the Perpetual Motion Marble Kit Solar Marble Machine a Buildable Solar Powered Marble Machine Also Known As the Perpetual Motion Marble Kit Manufactured by: Solarbotics. SOLAR POWERED: The Solar Marble Machine is powered by light. Can also be cranked manually. MADE OF QUALITY MATERIAL AND PERFECT SIZE FOR YOUR DESK: Made of Russian birch wood and measures approximately 4", x 4", x 3".

Marble Run Basic

Marble Run Basic
Marble Run Basic

Marble Run Basic. Child safe as per international safety standard. This toy stimulates creativity and reasoning, both of which are required to build impressive-looking structures with the correct angles of inclination. Build structures with this basic circuit of 45 pieces. Marble run promotes creativity and logical reasoning.

DICPOLIA Toys Relax Gyroscope Peripheral Combat Disc Detonating Gyroscope Disk Rotating DIY Battle Gyro Disc Toy Just Combat Disc No Beyblades Black

DICPOLIA Toys Relax Gyroscope Peripheral Combat Disc Detonating Gyroscope Disk Rotating DIY Battle Gyro Disc Toy Just Combat Disc No Beyblades Black
DICPOLIA Toys Relax Gyroscope Peripheral Combat Disc Detonating Gyroscope Disk Rotating DIY Battle Gyro Disc Toy Just Combat Disc No Beyblades Black

DICPOLIA Toys Relax Gyroscope Peripheral Combat Disc Detonating Gyroscope Disk Rotating DIY Battle Gyro Disc Toy Just Combat Disc No Beyblades Black. x 1 F 492; x 1 F 492; x 1 F 492; Safe and non toxic - No Borax is used in this slime toys for infants squeeze toys on prime squeeze toys for autistic children squeeze toys with sound squeeze toys for anxiety squeeze toys keychain. toys for 2 year old boy car toys for 2 year old boy toys for 2 year old boy mickey mouse toys for 2 year old boy toys for 2 year old cloud slime cloud slime prime cloud slime scented cloud slime kit cloud slime cheap cloud slime under 5 dollars cloud slime free cloud slime under 1 dollars cloud slime snow cloud slime 8 oz cloud slime prime cloud slime prime under 5 dollars. x 1 F 492; x 1 F 492; x 1 F 492; Amazing fluffy slime and super fun to play with! x 1 F 492; x 1 F 492; x 1 F 492; GIFT: It's a great fidget toy And decompression toys for stress relief educational kit solar car musical instrument toy birthday presents metal toys cartoon dolls stimulate interest mental ability practical ability training children cognitive ability and analytical skills imagination folding kick scooter outdoor ride push exercise scooter remote control car buggy truck radio electric toys fashion beach toy set park flying drone toy gyro stuffed animal doll toy mouse kart transformers spo. x 1 F 492; x 1 F 492; x 1 F 492; Play putty isn't just for the kiddos anymore! clay toys for kids twinkle clay toy for kids clay toy clay toys for kids twinkle clay toy for kids clay toy clay toys for toddlers clay toys in art and craft clay toys for girls clay toy clay toys slime clay toys with mechanism. Not contains gyroscopes, Packing Content: 1 x Burst Gyro Arena Disk Exciting Duel Spinning Top Beyblades Launcher Stadium. x 1 F 492; x 1 F 492; x 1 F 492; STYLE: sqishys toys, squishy, very slow rising, feel toys baby toy balls baby toys bathtub toy bags bathtub toys car seat toys children's teaching clocks crib toys early development activity centers early development hammering pounding toys push pull baby toys sorting stacking baby toys toddler toy figures City Great Vehicles Pizza Van Construction Toy Classic Large Creative Brick Box Baby Shower Pin the Dummy on the Baby Game Pokemon Cards with Foils Bonus Promo wave 2 dolly cart. Everything kids need to start battling; Ages 8 and up? Set your own Beybattle or Shogun Steel Bey Warriors tops against each other in head-to-head combat or compete with a friend to determine the ultimate champion. ICan burst opponents tops in battle? Stadium Dimensions: 38 x 33 x 7.5 cm? Our liquid glass fidget slime makes an excellent gift idea for over-stressed coworkers, employees, bosses, college students, etc.

Loune Week Marble Run Muqgew Blocks DIY Marble Run Coaster Maze Toy Hanmun DIY Marble Race Toys For Children Brinquedos Juguetes

Loune Week Marble Run Muqgew Blocks DIY Marble Run Coaster Maze Toy Hanmun DIY Marble Race Toys For Children Brinquedos Juguetes
Loune Week Marble Run Muqgew Blocks DIY Marble Run Coaster Maze Toy Hanmun DIY Marble Race Toys For Children Brinquedos Juguetes

Loune Week Marble Run Muqgew Blocks DIY Marble Run Coaster Maze Toy Hanmun DIY Marble Race Toys For Children Brinquedos Juguetes. Encourages creative thinking. Make sure to supervise your children, as marbles can be a choking hazard for them. Your kids will watch the marbles fly and be thoroughly entertained. Keep your kids amused for hours while. Our product encourages creative thinking and develop skills such as hand-eye coordination, spatial and design abilities.

50 Of The Worlds Best Marbles

50 Of The Worlds Best Marbles
50 Of The Worlds Best Marbles

50 Of The Worlds Best Marbles. Contains 50 marbles, dice and games instructions. Also comes with a cotton pouch. A marvellous mixture of marbles with a cotton bag, dice and games instructions 4 Years. FS USA Glass Mega Marbles Octopus Game Net Set (25 Piece). Toysmith Marbles in a Tin Box. Blue Earth Marble With Natural Earth Continents, Recycled Glass, 5 In A Pouch, 1 Inch Diameter. FS USA Marbles - Half Pound of Rounds. Classic Marbles Game. Glass Marbles Bulk, Set of 40, (36 Players and 4 Shooters) Assorted Colors, with Game Marbles Rules. Glass Marbles Bulk, Set OF 50, (48 Players and 2 Shooters) Assorted Colors, Styles, and Finishes. Electric Eel Mega Marbles. with Game Marbles Rules. Mega Marbles - JUPITER MARBLES NET (1 Shooter Marble 24 Player Marbles). Mega Marbles SET OF 24 ASSORTED BULK - 1", SHOOTER MARBLES.

Marble Mania Skyscraper Marble Maze

Marble Mania Skyscraper Marble Maze
Marble Mania Skyscraper Marble Maze

Marble Mania Skyscraper Marble Maze. Spiral marble twister. Spiral marble lifter. Action Packed Marble Maze with a Spiral Lifter 200 Pieces.

Fityle 20Pcs 25Mm Speckled Glass Marbles Kids Marble Run Game Marble Solitaire Toy Accs Vase Filler Fish Tank Home Decor

Fityle 20Pcs 25Mm Speckled Glass Marbles Kids Marble Run Game Marble Solitaire Toy Accs Vase Filler Fish Tank Home Decor
Fityle 20Pcs 25Mm Speckled Glass Marbles Kids Marble Run Game Marble Solitaire Toy Accs Vase Filler Fish Tank Home Decor

Fityle 20Pcs 25Mm Speckled Glass Marbles Kids Marble Run Game Marble Solitaire Toy Accs Vase Filler Fish Tank Home Decor. Set of 20 pieces glass marbles. Due to the light and screen difference, the item 's color may be slightly different from the pictures. Perfect decoration for Vase or fish tank also good for games, DIY crafts and collecting. Great for Chinese Checkers, Collectors or a Marble Run that boost your child's hand-eye coordination and develop fine motor skills. Set of game replacment marbles: playing with marbles is a tradition activity that will keep your little ones entertained for hours. Material: Glass - Size (Dia) approx 25 mm / 1 inch - Quantity: 1 set / 20 pcs - Color: As picture show - CHOKING HAZARD-Small parts, please use under supervision of parents. Set of game replacment marbles: playing with marbles is a tradition activity that will keep your little ones entertained for hours.

Mega Marbles MONARCH BUTTERFLY MARBLES NET 1 Shooter Marble 24 Player Marbles

Mega Marbles MONARCH BUTTERFLY MARBLES NET 1 Shooter Marble 24 Player Marbles
Mega Marbles MONARCH BUTTERFLY MARBLES NET 1 Shooter Marble 24 Player Marbles

Mega Marbles MONARCH BUTTERFLY MARBLES NET 1 Shooter Marble 24 Player Marbles. Peacock Marbles. Glass Mega Marbles Bengal Tiger Game Net Set (25 Piece). FS USA Glass Mega Marbles Unicorn Game Net Set (25 Piece). Mega Marbles Blue Jay Marble Net. FS USA Glass Mega Marbles Octopus Game Net Set (25 Piece). Wolf 24 Player 1 Shooter Mega Marbles Net Set. Mega Marbles - SUN MARBLES NET (1 Shooter Marble 24 Player Marbles). Fabricas Selectas Butterfly Marbles. Stingray Game Net Set 25 Piece Glass Mega Marbles Toy. FS USA Rooster Marbles.

The Learning Journey Techno Gears Marble Mania Genius

The Learning Journey Techno Gears Marble Mania Genius
The Learning Journey Techno Gears Marble Mania Genius

The Learning Journey Techno Gears Marble Mania Genius. New dual power lifters, quad track marble channels, spiral channel and marble loop channel are just a few of the new features of the Genius set. Techno Gears Marble Mania Genius will keep your little architect busy creating new working and moving creations. Motorized Gear Unit. Compatible with all Techno Gears Sets. More than 500 colorful construction pieces. This high-tech version of Marble Mania has over 500 pieces to build a bigger and better marble run.

Fityle 50PCS 16Mm Colorful Glass Marbles Kids Marble Run Game Marble Solitaire Toy Accs Vase Filler Fish Tank Home Decor Black

Fityle 50PCS 16Mm Colorful Glass Marbles Kids Marble Run Game Marble Solitaire Toy Accs Vase Filler Fish Tank Home Decor Black
Fityle 50PCS 16Mm Colorful Glass Marbles Kids Marble Run Game Marble Solitaire Toy Accs Vase Filler Fish Tank Home Decor Black

Fityle 50PCS 16Mm Colorful Glass Marbles Kids Marble Run Game Marble Solitaire Toy Accs Vase Filler Fish Tank Home Decor Black. Set of 50 pieces glass marbles in transparent with stripe. Great for Chinese Checkers, Collectors or a Marble Run that boost your child's hand-eye coordination and develop fine motor skills. Set of game replacment marbles: playing with marbles is a cheerful tradition activity that will keep your little ones entertained for hours. Material: Glass - Size (Dia) approx 16 mm / 6.29 inch - Quantity: 1 set / 50 pcs - Color: Multicolored - CHOKING HAZARD-Small parts, please use under supervision of parents. Set of game replacment marbles: playing with marbles is a cheerful tradition activity that will keep your little ones entertained for hours. Size (Dia) approx 16 mm / 6.29 inch.