Smatree 1pc Aluminum Thumbscrew/Thumb Screw for GoPro Session, Hero 5/4/3+/3/2/1 (Blue) Much easier to tighten and loosen without the discomfort of the OEM design,high strength and compressivedurable A wear-proof O-ring helps to prevent plastic from abrasion yet not essential for every buyer These screws never loosened a bit,pefect for the Extreme Sports,like Bicycle climbing. Off-road cycling, outdoor rock climbing, mountain downhill, extreme rafting, desert crossing, autocross Improved screw design and add some color for your mount,make your camera look cool 1 year Manufacturer Warranty,Package:1 x Long Thumbscrew with Steel Acorn Nut