The Midi is a great product designed specifically to grip tarps, clear poly, or any fabric or sheet goods that require a strong long lasting hold. Often called tarp clips, tarp fasteners or tarp clamps, the EasyKlip Midi has been engineered to be durable, affordable and easy to use. All it takes is one hand! The patented EasyKlip Midi design is twice as strong as other tarp clips and it actually grips tighter the more is pulled on! The Midi clip has been engineered to increase its clamping pressure or grip, as the load increases. This makes our tarp clips the strongest most reliable on the market. They are ideal for tarps or any type of fabric used for Camping, Farming and Agriculture, Gardening and Horticulture as well as Marine, and Automotive. Features Include: Quick Release Mechanism The heavier the load the greater the grip Reusable Relocate as required Apply with one hand operation Takes thick fabrics up to 6mm No tools needed Made of Glass reinforced Nylon Temperature Range 22 to 220 Instant grip up to 220 lbs! Wt: .9 oz. each Size: 3 x 1.5 4 per pack Not intended for use in climbing, safety situations, or any other scenario were humans may be injured.