Smatree 4-in-1 Aluminum Thumbscrew Accessories Tripod Mount Adapter for GoPro Session, Hero Fusion,7, 6, 5, 4, 3+, 3, 2, 1,GoPro Hero 2018 Aluminum Thumbscrew, High quality stainless Steel Acorn Nut. The length of Thumbscrew is about 2.2 inches. A small rubber ring is good for preventing abrasion. It is not essential for everyone, so put them away when you don't need it. Made of high quality Aluminum with a Threaded End, replace the plastic tripod mount. Tripod mount for attaching your quick-release sport camera to a standard 1/4-20 tripod stud. Built-in threaded end eliminating the need for a nut, convenience and no worry about losing the nut. The combination of screw + wrench can tighten or loosen the screw easier Wide utilization between sport cameras and accessories