The Dirty Gardener Universal Heavy Duty Locking Jaws Clip/Tarp Clamp - 2 Count This handy clip provides 3 times the gripping power of other clips Features a patented square tooth design and cam-lock clamping Injection molded with high strength plastic compound and dead load tested Doesn't slip when gripping tarps, covers, screens, ropes, bungees and more Proudly made in the U.S.A.