The Minoura IH-520-OS is a smart phone handlebar mounted holder for bicycles, featuring a fixed type LW-Clamp for greater safety and security. It is compatible with phone widths from 50mm to 85mm and thicknesses up to 18mm. The holder includes adjustable height, locking mechanism wings, and an extended lower arm for larger screens. The screen angle is user adjustable, and the holder is slightly offset forward from the handle for improved visibility.