Durable material：The tonneau cover clamps is made of aluminum alloy, which is a high-quality material, sturdy and not easy to corrode, with a long service life （Can be used up to 1.32in thick） Wide Applications: This mounting clip lengthens the bolts to make the opening and closing range larger and more applicable，replace the 1112514 clamps，Suitable for Chevy, Ford, Dodge, Ram, Toyota, Nissan, Honda Easy Installation: Aluminum mounting clamps do not require drilling. It can be quickly installed in a few minutes. Just put the camper clamp into the bed, then put the screws into the holes, and finally tighten the screws with a wrench Multifunctional:This truck cap clamp is mainly used to secure a camper, shell, tent or cover to the back of a pickup truck bed. The wavy stripes on the front of the retaining clip provide a strong grip and improve the stability of the product Note: Please measure and check the relevant dimensions before purchasing Note: Please measure and check the relevant dimensions before purchasing