Locks to wall plate with three stainless steel setscrews for theftresistant mounting. Hook and flange are one-piece brass casting with satin nickel-plated finish to match stainless steel. Withstands 300 lbs (136 kg) downward pull. Flange diameter: 2 3⁄4" (70mm). Unit projects 3 7⁄16" (85mm).