Durable material: The tarp clip is made of PA material, which has a certain thickness, is strong and durable, is not easy to break, and can be used for a long time. Super Retention: Heavy-duty tarp clip is designed with thumbscrews to tighten the jaws, which can firmly hold the tarp even in heavy storm. Tarp clip size: 3.2 inches long and 1 inch wide. The chin opens about 1.1 inches and the hole diameter is 0.39 inches Easy to use: Just tighten or loosen the knob to easily install or remove. The teeth inside hold the tarp firmly, but wont tear it or damage it. Wide range of uses: tent clips are very suitable for temporary protection of tarps, awnings, rain covers, car/truck covers, bike covers, boat covers, swimming pool covers, sun shades , projection screens temporary covers, sofa covers, barbecue covers, hammocks Rain cover, etc.