Standoff Screws for Sign Panels - Set of 12 (Polished Aluminum) Set of 12 standoffs total. Measures 0.62-inch diameter, 0.62-inch length. Fits glass or wooden panels up to 0.25 inches thick. Aluminum construction, polished finish. Requires a 0.44-inch-deep hole drilled into a wall or other flat surface. Sign kits mount a total of 3 signs (4 standoffs per sign).