Material: T6063 aluminum alloy/screw 304 stainless steel, product application: support diameter 22-28mm. Features: High strength electronics, all-aluminum casing, CNN exquisite craftsmanship. The cool appearance is a must-have item for car lovers. It is anti-corrosion with anodic oxidation coloring technique, not fade, wear-resistant, high hardness. Luminous function: easy to use at night. In the process of driving a motorcycle, watching time is easy.The durable case supports its waterproof, rainproof, explosion-proof, durable and so on. Fitment: universal,fit most motorcycle,street bike/standard bike/sport bike/dirt bike/naked bike with 7/8" or 1" handlebar such as Yamaha,Kawasaki,Honda,Suzuki,Harley Davidson,etc. Waterproof and easy installing.