Material: * 3K Carbon fiber bike top cap and headset spacers * Steel bicycle fork headset star nut * TC4 titanium alloy bolt Specifications: * Compatibility: fits 1-1/8 inch road and mountain bike stems and forks * Spacers weight:28.47g( 3mm:1.62g; 5mm:2.65g; 10mm:5.45g; 15mm:7.75g; 20mm:11g) * Headset cap+bolt weight: 5.77g * Star nut weight:10.94g Package contents: * 1 x Headset top caps * 5 x Headset Spacer(1 x 3 mm,1 x 5 mm,1 x 10 mm,1 x 15 mm,1 x 20 mm) * 1 x Bicycle fork headset star nut * 1 x Bolts( M6 x 30 mm)

3K Carbon Fiber Super Lightweight, Durable, Rustproof, Waterproof, automatic cutting, smooth edge, fit most of the road/mtb bicycles. Multi-size spacers: this package contains 5 different sizes,small size of spacer headset let you have a more precise height adjustment. Material:3K Carbon fiber headset cap and spacers;Steel star nut;TC4 titanium alloy bolt. Compatibility: fits 1-1/8 inch /28.6mm road and mountain bike stems and forks, please check the size of your tube before purchg.

Date First Available: March 13, 2022. Best Sellers Rank: #362,608 in Sports & Outdoors. Customer Reviews: 4.1 out of 5 stars 20 ratings 4.1 out of 5 stars. : B09VFH8NSL. Size: ?28.6MM. Manufacturer: ?CYCEARTH. Material: ?Titanium, Carbon_fiber. Brand Name: ?CYCEARTH. Package Weight: ?0.08 Kilograms. Item Package Dimensions L x W x H: ?4.92 x 3.62 x 1.46 inches.