Perfect substitute the plastic thumbscrew for GoPro hero 13 12 11 10 9 8 7 6 5 4 3 Cameras, DJI OSMO Action 5 pro/4/3/2 Camera ect Aluminum Thumbscrew, high-Strength & precision CNC machining aluminum alloy screws Help you to easily tighten and loosen screws between camera mount and camera, and a O-ring helps to prevent camera from abrasion yet not essential for every buyer, so put it away when you don't need it Color:blue screw+ blue wrench, make your camera look cool and awesome. The length of Thumbscrew is about 2.2 inches The combination of screw+wrench can tighten or loosen the screw easier