Features: Bike Stem Top Cap: Upgraded bicycle stem top cap specially for bicycle front fork headset, well decorative your bikes and for express your unique taste & personalization. Various Styles & Universal Size: The headset top cap comes with 20 optional size measures diameter of 31.7mm, please choose the correspondingly caps and match for you bicycle size. High-quality Material: Made by qualified aluminium alloy material, with strong & durable design, upgrade exquisite technology, wear resistance, accurate hole size to improve using experience. Easy Installation: Our stem top cap package comes with bolt to ensure you can use it and easily assemble on your bicycles and fixed tightly, alloy lightweight design to ensure riding smooth and reduce the wind resistance. Wide Range Application: Our stem top cap kit are suitable for most MTB mountain bikes, road bikes, children's bikes, folding bikes, and etc, easy use and assembly for leisure hobbyist. Specifications: Product Dimension: approx. diameter 31.7mm/1.24 inch Material: Aluminium Alloy Style Option: 20 options as pictures shown, please select your preference Net Weight: approx. 12g/0.02 lbs Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Bike Stem Top Cap