Aluminum Thumbscrew Set Screw Kit and Wrench for Gopro HD Hero4 ,3+,3,2 (Green) These replacement Thumbscrews are perfect for standard accessories of all GoPro Hero Series, use for fixing your GoPro equipments Made of high quality high-Strength, high rigidity & precision CNC machining Aluminium alloy and Stainless steel, more wearable and durable, provides long life. The wrench is designed to tighten and loosen the screw for your gopro camera. Compared with tightening the screw by hand, using this wrench would keep your camera in a safer situation, especially when you are doing some high-speed sports such as surfing, cycle racing, parachuting and so on. Long Thumbscrew is about 2.2 inches. Short Thumbscrew is about 1.7 inches, make your gopro look cool and awesome