Designed to meet the demands of road bike riders CNC precision cutting of aircraft grade aluminum to the previous generation of resin. Asymmetrical out-front shape allows you to always set your smartphone in the right position on the center of the bike. Compatible with 3 handlebar diameters by replacing the included adapter. It also comes with a protective film to prevent scratches on the steering wheel. Use the Camera/Light Adapter Kit (sold separately) to mount GoPro or SP Connect All-Around LED Lights under your smartphone. Bolts are made of stainless steel that is resistant to rain and sweat.