DescriptionThe item is a professional and practical bike headset stem spacer washers in different thickness, which are mainly made of durable aluminium alloy material, and used for oversize forks and stems. It is one way to lighten up your bike.Features- Color: Black. - Material: aluminium alloy - Size: 2.86x 2.86x 0.3cm - material. Lightweight, strong, heat-resistant, rub-resisitant, corrosion-resisitant. - Various specifications, accurate adjustment of height - Different thickness to meet your different needs. - for raising your handle bar. - Lightweight carbon fiber wheels for smooth riding and easy transport. - Front mechanical disc brakes system offers safe stopping power.