The mirror or pinch bolt mount consists of 85mm * 25mm base with 11mm / 0.43in hole, 45mm / 1.77in height. This mount is often used on motorcycles, attaching to the mirror frame. And it also fit for the bike of brand BMW. This mount fits well on many handlebar pinch bolts with a washer (base is 5mm thick, with 11mm hole). Compatible with allfor DJI Osmo Action/GoPro Hero 7 / Hero 6 / Hero 5 Hero 4 Session Xiaoyi MiJia Sport Camera. Package including: 1 x holder mount & 1 x long screw.