The hook is made of high quality stainless steel, sturdy and thick, with strong load-bearing capacity, suitable for a variety of items. The stainless steel material does not rust easily, so you don't have to worry about falling off. It can be installed outdoors and will last like new. Our products have 9 different shapes to choose from, suitable for different load-bearing needs. Installation Method 1: First place the hook at the desired installation location, mark the exact location of the hole, then remove the hook and drill the hole with a drilling tool. The depth of the hole refers to the length of the screw. Then put the plastic expansion tube into the hole, put the hook in the just-drilled hole, and then screw the hook in with a screwdriver. You can also use expansion bolts to install trial higher load-bearing requirements.