1. [Upgrade tarpaulin Clip] The tarpaulin clip is designed with 6 rows of teeth, the mouth is 1.73 inches (4.4 cm) wider, can be opened about 0.59 inches /1.5 cm, and the bite force is stronger and more stable. It won't damage your tent or other cover2. Unique mouth design with a stronger bite force to carry around 110.23lb - 160lb (50-70KG) perfectly holds the pool cover in place, even in winds over 60mph, more safely preventing the tarp from falling.3. [Adjustable screw thumb screw] The waterproof cloth clip is designed with adjustable screw thumb screw, easy to install or remove, and can be adjusted by tightening or loosening the screw knob on thick or thin waterproof cloth.4. [High quality material] Waterproof cloth clip strong lock handle is made of durable PA material, ultra-high strength nylon material, durable, waterproof, weather resistant, tear resistant. You can reuse these tarp clips for a long time.5. [Packaging content] 12PCS heavy duty tarp clip, can be used for many applications, tent clip is the ideal fixed tarp clip, car truck cover tarp clip, boat tarp clip heavy duty swimming pool tarp clip, canvas clip