Aluminum Thumbscrew, Wrench Tool, and Lanyard Set for GoPro HD Hero4 Hero3 Hero2 SJ4000 SJ5000 camera and mount accessories HIGHER STRENGTH APPLIANCE: This high quality, high-Strength, high rigidity & precision CNC machining Aluminium alloy and Stainless steel Thumb Screw is the perfect substitute to the plastic thumbscrew for GoPro Cameras GOPRO COMPATIBLE: This thumbscrew is perfect for attaching standard accessories of all GoPro Hero Series. The wrench is designed to easily tighten and loosen the screw for your GoPro camera. PERFECT WRENCH TOOL: This wrench was especially designed to tighten and loosen the screws of your gopro camera, to keep it in a safer situation. Especially when you are out there doing some action sports such as surfing, cycle racing, Mountain Biking, SKiing, etc. ABRASION RESISTANT:The small rubber ring on the Aluminum Thumb Screw is good for preventing abrasion to your Gopro camera, mount or accessories. SAFETY LANYARD HOLD - If all else fails and your Gopro mount, tripod or accessory breaks, the included safety Lanyard will hold your camera to ensure it is still attached, and hanging until your next stop.