Description: Bicycle Handlebar Seatpost Clamp with Three Way Adjustable Pivot Arm for Gopro Hero 3 ST-02 Attach your GoPro camera to handlebars， seatposts， ski poles and more. Fits 0.75!#!amp!*!quot; to 1.4!#!amp!*!quot; (1.9cm !#!amp!*!ndash; 3.5cm) diameter tubes. You can also clamp to chainstays， small roll bars， bolt-heads， windsurfing and kitesurfing control bars， or even use to create a handheld boom !#!amp!*!ndash; any pole that is in the size range above. Comes with pivoting orientation arms allowing for 3-way adjustability， ensuring you can get the angle you want. Clamps to chainstays， small roll bars， bolt-heads， windsurfing and kitesurfing control bars， or even use to create a handheld boom !#!amp!*!ndash; any pole that is in the size range above. Package included : 1 x Bicycle Handlebar\/ Seatpost Clamp 2 x Three-way Pivot Arm Detailed pictures :