Lite Tough Plastic Tightening Mounting Round Wrench Knob Nut for all GoPro HD Hero 2 3 3+ White Silver Black edition Great for installation of camera to your bike, snowboard, surfboard etc ! Lite but Tough plastic, keep in your pocket tighten bolts anywhere Works with genuine bolts provided and also many aftermarket / 3rd party brand bolts! For fixing GoPro on Tripod, suction cup, mount, rollbar, pole etc! Compatible Camera Models & bolts : GoPro HD Hero 6 5 4 3 2 session fusion etc