Roll Bar Mount for GoPro Hero 1 Hero 2 Hero 3 Camera Fits around any bar from 1.4" to 2.5" (3.5cm - 6.35cm) in diameter Securely attaches your camera housing to roll bars, seatposts, ATVs, bikes, boats, etc. Compatible with all GoPro hero cameras, HERO3, HERO2, and HD HERO original cameras Great accessory for holding your GoPro hero to take shots of yourself or others Quick install and release function