Use these edge-grip standoff screws to create an eye-catching, three-dimensional sign display. These silver aluminum finish fasteners hold sign panels from 4 points on the sides rather than drilling through it. Mount sign panels made of glass, wood or metal 1/2-inches off the wall without distracting from the sign design. There is a setscrew lock that secures the knob onto the mounting and cannot be removed without a hex wrench. Each set of 4 standoff screws comes with all hardware necessary to install 1 sign from 7/16-inch to 17/32-inch thick. Dimensions: 1-inch diameter x 1/2-inch off the wall Sign Panel Thickness: 7/16-inch - 17/32-inch .