Features: Package Includes: Bicycles headset spacers includes 3mm, 5mm, 10mm, 15mm, 20mm (5 pieces), variety of sizes for you to adjust the appropriate height. Good Material: Bike headset spacers set uses carbon fiber material, anti-corrosion and lightweight, ultra-light and high strength. Suitable: Bike fork washer be suitable for most road mountain bikes. Antioxidation, black, non-fading surfaces, with good precision. Advantages: Headset spacers be super light, high strength, corrosion-resistant, never rusty, and can replace aluminum alloy bicycles headset partitions. Variety of Sizes: Headset spacers kit come with variety of sizes for you to adjust the appropriate height, the small size of the spacers earphone allows you to adjust the height more accurately. Specifications: Material: Carbon Fiber Color Options: 11 Color are Available as Shown in the Picture. Package Weight: approx.17g Height: 3/5/10/15/20mm Outer Diameter: approx.33mm/1.29in Inner Diameter: approx.29mm/1.14in Note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. Due to difference between different monitors, the picture may not reflect the actual color of the item. Thanks! Package includes: Set of 5Pcs Bike Headset Spacers