YUYIKES Bike Handlebar Seatpost Ski Pole Mount for Gopro Hero 3 2 1 Cameras Compatible with All HERO3, HERO2, and HD HERO Cameras You can also clamp to chainstays, small roll bars, bolt-heads, windsurfing and kitesurfing control bars. High toughness and good strength Fits 0.75' to 1.4' (1.9cm~3.5cm) diameter tubes Attach your GoPro camera to handlebars,seatposts,ski poles and more to make your camera more stable