- Package includes 8 pieces: 5 aluminum spacers (10mm x 4.5mm), 1 headset star, 1 shaft cap cover, and 1 headset screw. - Designed to fit 1.1" road bike and mountain bike stems and forks, ensuring compatibility with a wide range of bicycle models. - Lightweight yet durable, these spacers offer strong pressure resistance and maintain their shape under stress, with a 28.6mm diameter that suits most bicycle headsets. - Constructed from high-quality materials, the headset spacer, top cap, stainless steel bike fork headset, star nut, and screw provide reliable performance and longevity. - Ideal for adjusting headset height or replacing worn components, this kit is perfect for cyclists looking to enhance their bike's handling and performance during rides. - Easily install the spacers to fine-tune your bike's setup, whether you're upgrading your components or performing routine maintenance. - Suitable for both amateur and professional cyclists, this versatile set ensures a secure fit and optimal functionality on various bike types.