The dent repair puller is only for the flat surface, not for the curved surface and store it in dry condition. The dent remover tool for car was made of high quality ABS material and durable high strength natural rubber. Please make sure that the car dents are in the flat surface and should be larger than the bottom suction cup diameter. Make sure dent puller suction cup firmly stick on the dent surface,before you pull. How to Use ? 1.Adjust the handle to the separate state. 2.Place the suction cup on the surface of the item. 3.Press the suction cup vertically downwards, and then make use of suction cup handle(to lift the item). 4 Included Components - 1 x Car dent Puller