The tarp clips are made of plastic material, have a certain thickness,sturdy and durable. The buckles are made of aluminum alloy, ,non-rusting,convenient,durable and fadeless. mouth with teeth holds tarps much more stable. Easy to install or remove, just tighten or loosen the screw knob to adjust on thick or thin tarps. Features - Color: Black. - Material: Aluminum alloy and plastic. - Size: 7.20 x 2.20 x 0.90cm/ 2.83 x 0.86 x 0.35 inch. - Small damage to the fabric. It is durable and can be used repeatedly. - These camping clamps are easily to use, you just need to grip the of the tarpaulins, then press the end of clip to bite and fix. - Included carabiner for conveinent to connect most kind of bungee cord, easier for use. - accessories for hunting, fishing, swimming pool covers, outdoor camping, traveling, sailing, hiking or picnics and more. - These clips are suitable for outdoor camping tents, tarpaulins, canvas, boat covers, swimming pool covers, temporary and other fabric covers, etc., fit for outdoor adventurers, campers and travelers. Package list: 5 x clips 5 x clips with gourd hooks