Description:Made of high quality material, durable and useful. Great way to take shots of yourself or of people following you. Securely attaches camera housing to handlebar, seat post, fork, boom, roll bar, etc. You can also clamp to chainstays, small roll bars, bolt-heads, windsurfing and kitesurfing control bars, or even use to create a handheld boom - any pole that is in the size range above. Compatibility with GoPro HERO4, GoPro HERO3+, GoPro HERO3, GoPro HERO2, GoPro HERO1, et.Specification:Material: Metal, ABSDiameter Tubes: 1.5-4cm/0.59-1.57inchSize: 8x6x1.8cm/3.14x2.36x0.70inchWeight: 47gPackage Includes:1 Piece Bike MountNote:The camera in picture is not included.Color might be slightly different due to the color calibration of each individual monitor.Please allow slightly measuring deviation due to manual measurement.