This bike phone holder is made of high-quality aluminum alloy and is designed for use with mountain bikes, road bikes, motorcycles, and scooters. It features a quick attach and release mechanism, making it easy to install and remove your phone. The holder also comes with a secondary safety lock for added security. The adapter is compatible with most phone cases and features a 3D curved surface design for a comfortable touch. The product includes a phone holder, adhesive adapter, and elastic rubber rings.