DecoScrews are a screw and anchor in one. They can be installed with a screwdriver and replace the complicated hanging systems that need a drill, anchor and fastener.DecoScrews are designed specifically to securely hang your heavy pictures, canvas art and clocks in drywall. They can hold up to 30 lb (14 kg) on a single screw, and the cone shaped shank eliminates the need for a separate wall anchor. Do not use these screws to install shelves or in plaster walls.The patented design of the head includes a groove between the back of the head and the wall, to make sure whatever you hang on it stays there. DecoScrews are designed to work with all types of hanging hardware, including: wire, D-rings, sawtooth hooks and keyhole hangers.DecoScrews work in standard thickness drywall or sheetrock, and are sized so they will not puncture wiring or plumbing. DecoScrews will work with either a Phillips or flathead screwdriver.To remove DecoScrews, simply reverse the way they were installed. They are reusable, so keep them handy for your next wall decorating project. Material: Stainless Steel.