4pcs 5mm Bicycle Front Fork Washer Cap Aluminum Alloy MTB Bike Cycling Headset Stem Spacer Ring Gasket Feature: Aluminum alloy material to reduce the burden of riding. Specification: Main material: aluminum alloy Product color: red, gold, blue, black Outer ring diameter: 34mm Inner ring diameter: 28mm Height: 5mm Set net weight: about 15g Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Packages: 4 x Headset Spacers