Specifications: These headset spacers are made of carbon fiber, lightweight and durable, strong hardness and not easy to get deformed, high quality product provides more safety condition when riding outside. Featured with smooth edge by automatic cutting, delicate texture and woven carbon, equipped with well temperature resistance and good impact resistance, these bicycle accessories can be used for a long time. Carbon fiber washer is more thinner, which makes your bike look more beautiful. Outer diameter is 28.6mm, it is suitable for most bicycles, mountain bike, road bike, etc. Type: Bicycle Washer Material: Carbon Fiber Quantity: 5Pcs Feature: Bike Accessory, Durable, Useful Size Details: 15mm: 33mm x 15mm/1.3" x 0.59" (Approx.) 10mm: 33mm x 10mm/1.3" x 0.39" (Approx.) 5mm: 33mm x 5mm/1.3" x 0.2" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x 15mm Bicycle Washers 2 x 10mm Bicycle Washers 2 x 5mm Bicycle Washers