ChromLives Bike Clamp Bike Bracket Bicycle Mount Holder for Bluetooth Speakers/GoPro Hero/Action Cameras,w/Tripod Bracket for Gopro (SL1137) It can be widely used with vented helmet strap,chest belt,various adhensive mounts etc. With transfer function,it can be directly connected with GoPro waterproof shell. Easy to install and remove,convenient for you to use. Material:Plastic + Metal,high quality and durable. 180adjustable for any angle you want