Size: The tarp clip weights 27.5 grams, measures 3 1/4 inches long and 1 inch wide. The jaw opens about 1/4inches, can fit the heavy duty gray tarp well. The diameter of the hole is 1/2inches. Durable Material: The tarp clips are made of durable PA material, not easy to break, you can reuse these tarp clips for a long time. Super Hoding power:heavy duty tarp clip designed with the thumb screw to tighten the jaw can securely hold the tarp down even the strong storms. Easy to use: Easy to install or remove,The teeth inside hold the tarp tightlyProvides instant anchor point to attach any standard bungee cord, tie down or rope Wide Usage: Tent clamps are perfect for holding up tarp,car/truck cover, canopy, rainfly,bike cover, boat cover, pool cover,swimming pool coverstemporary shelters or any fabric covering that requires additional support points.