Aluminum Thumbscrew, High quality stainless Steel Acorn Nut Direct replacement for GoPro Session, Gopro Hero 13/12/11/10/9/8/7/6/5/4/3/3 plus/DJI OSMO Action Cameras, replace the plastic thumbscrew Help you to easily tighten and loosen screws between mount and camera, and a O-ring helps to prevent camera from abrasion yet not essential for every buyer Color: Blue. Long Thumbscrew is about 2.2 inches. Short Thumbscrew is about 1.7 inches,make your camera look cool and awesome Package: 1 x Long Thumbscrew with Steel Acorn Nut, 2x Short Thumbscrew with Steel Acorn Nut