Sumind 9 pieces bike bicycle carbon fiber headset spacer kit 1-1/8 inch, 2/ 3/ 5/ 10/ 15 mm, 5 size 5 Different size: Package provides 5 different size, including 1 piece of 2 mm, 3 mm and 15 mm, 3 piece of 5 mm and 10 mm, combined with the use of the situation, so we offers more 5 mm and 10 mm, multi-size could meet your different needs. Good quality: Made from carbon fiber material, carbon fiber is lighter, harder and more resistant to corrosion than alloy, the carbon fiber bicycle spacer is a good choice for you. Specification: Quantity: 9 pieces Color: black Material: carbon fiber Weight: 38 g Internal diameter: 28.6 mm External diameter: 34.9 mm Package contents: 1 x 2 mm headset spacer 1 x 3 mm headset spacer 3 x 5 mm headset spacer 3 x 10 mm headset spacer 1 x 15 mm headset spacerLightweight: the lightweight headset spacers inner diameter is 28.6 mm, and weight is 38 g in total (9 pieces). Compatibility: bicycle spacers with smooth surface and exquisite workmanship, fit most of the bicycles. Resistant to corrosion: carbon fiber bicycle headset spacer is more resistant to corrosion, more hard than aluminum alloy headset spacer, and lighter than aluminum alloy spacer. Material: the bicycle headset spacer is made from carbon fiber material, sturdy and durable to use, looks very nice. Multi-size selection: come with 5 different size, including 2 mm (1 piece), 3 mm (1 piece), 5 mm (3 pieces), 10 mm (3 pieces), 15 mm (1 piece), multi-size for you to adjust the appropriate height.Date First Available: September 12, 2017. Best Sellers Rank: #77,941 in Sports & Outdoors. Customer Reviews: 4.7 out of 5 stars 294 ratings 4.7 out of 5 stars. : B075MGKQ5J. Part Number: ?Sumind-Carbon Fiber-01. Manufacturer: ?Sumind. Material: ?Aluminum. Brand Name: ?Sumind. Package Weight: ?0.03 Kilograms. Item Package Dimensions L x W x H: ?4.69 x 3.39 x 0.71 inches.