Features two slots at the buckle to fit different thickness of backpack straps Full aluminum alloy made makes it more sturdy Swivel 360°and Tilt 180°with Free-Stop in any position Comes with rubber pads inside to avoid scratching straps Easy to attach and detach Niceyrig quick release straps clamp 338 is designed for allowing action cameras mounting to the backpack straps very easily. It compatible with most of action cameras with general purpose interface, like DJI Osmo Action, Yi 4K Action, all Gopro action camera, and ect. It Features two card slots at the lock catch to fit different thickness of backpack straps(width≤70mm, 2mm≤thickness≤10mm). It also can swivel 360°and tilt 180°with free-stop in any position to adjust different angle shooting. It comes with rubber pads inside to avoid scratching straps and enhance its friction with the strap to make it clamp tighter. It allows the action camera attach to the backpack straps easily via a wrench and red lock catch. Please note: Osmo Pocket can not be attaching to the clamp mount directly, it need extend accessories assist. Compatibility: DJI Osmo Action Yi 4K Action Gopro Series:Gopro HERO8 Black/Gopro Fusion/Gopro Max/Gopro HERO7 Black/Gopro HERO7 White/Gopro HERO7 Silver (All Gopro Action Cameras) Net Weight: 86g Material(s): Aluminum Alloy