Review on Heavy Duty Steel Picture and Mirror Hanger - Adjustable from 2-7/8 to 3-11/16 Inches - Pack of 2 - Prime-Line U 9131 by Doris Tran

Can't find them locally. Thank goodness they were with Revane! This is a HANGER MOUNT. You hammer one end into the wall while the bottom end hangs from the first piece with a screw. The lower part has a hook that fits into the bracket on the mirror. One of these assemblies is supplied on each side of the mirror, so in a pack of 2. After you've hung a mirror or picture and it's not perfectly level, simply insert a screwdriver behind the mirror and adjust the end of the hook up or down. I was introduced to these hooks by a glass company specializing in beautiful mirrors.