This item is mainly for bicycles hub fastening. Made of high-strength steel material, ensure maximum strength and durability for usage. Easy installation, save your . Not easy to break and deform, a good helper for you to repairing the bicycles hub. They can be widely applied on many different kinds of bicycles, such as road bikes, mountain bikes, touring bicycles, etc. Features -Color:Assorted Color -Material:Carbon Steel -Size:1.80X1.80X0.80cm/0.71X0.71X0.31in -Made of carbon steel material, not easy to rust and deform, delicate and serviceable, with a . -It serves to distribute the pressure of the nut over the part being secured, reducing the chance of damage to the part. -The included retaining Clip Hooks increase the contacts area, reduce the pressure, keep the nut from falling loose. -It has a wide of application, suitable for mountain road bikes, DIY modified accessories. -Various size nuts to meet your various using needs, making sure a comfortable using experience. Package list: 6 x Nuts 6 x Washers