1This product is a bicycle front fork hanging core, which is made of quality aluminum alloy. 2It is tough, has a stable structure, and can rise the bicycle stem height. 3Easy to install and detach, has high strength. 4A good partner for your bicycle, you can use it to DIY your bicycle. 5Suitable for most mountain bicycle, and folding bike Features: This product is a bicycle front fork hanging core, which is made of quality aluminum alloy. It is tough, has a stable structure, and can rise the bicycle stem height. Easy to install and detach, has high strength. A good partner for your bicycle, you can use it to DIY your bicycle. Suitable for most mountain bicycle, and folding bike Specification: Name:Front Fork Hanging Core Color: black Material: aluminum alloy Upper diameter:28.6mm / 1.1in Lower diameter:22.2mm / 0.9in, 25.4mm / 1in Total length:160mm / 6.3in Package list: 1 x Front Fork Hanging Core