* The interface of the clip is toothed, the design of the spiral buckle can maximize the clamping of the tarp, do not worry about the problem of falling off. * The tarp clamp clip is designed with an adjustable screw thumbscrew for easy installation or removal, simply tighten or loosen the screw knob to adjust on thick or thin tarps. * The tarp clips are made of durable PP material that is strong, tough and sturdy. It can bear about 110.23lbs-160lbs (50-70KG) and can hold the tarp in place even in windy conditions. * Because of its strong holding power, the clip can be used for awnings, caravans, tarps, walking sticks and boat covers for outdoor camping, sailing or picnics. * Hold the edge of the tarp, push on and unscrew the clamp to grip, and finally secure with bungee cords.