HangZ Gallery 20lb. picture hooks are the professional's choice when hanging pictures, mirrors and canvas. The one piece zinc alloy construction makes the hooks the worlds strongest. The precision channels make it so you don’t need anchors or to hit a stud. It's great for use with sheetrock and plaster walls. Details:Antique brass finishHolds up to 20 lb.4 picture hooksMetalUse with sheetrock and plaster walls