Increased hardness, corrosion resistance and abrasion resistance.Bolt screws with washers are rust proof, light weight, small size, easy to install and remove.The coating is not easy to fade, looks gorgeous and eye-catching, convenient to carry.Each screw is equipped with washers to increase contact area, reduce pressure and prevent slipping.Mountain bike, bicycle, road bike, racing car, DIY etc.This bolt is easy to install and remove, providing a better fixation and a better seal, while protecting the bicycle handlebar and being loved by outdoor cyclists.