Alloy Headset Stem Spacer Ring Gasket Headset Riser Handlebar Spacers Bike Headset Washer Stem Spacers Front Fork Washer

The reviewer discusses anodized aluminum headset spacers as a cosmetic upgrade for the handlebar setup. They state these spacers provide a cool pop of color, are available in many different colors, and are made from aluminum with chamfered edges for nice manufacturing quality. The reviewer mentions using a set on their own handlebar.