Hole Plug or Blank to fill holes 1-1/8 inch. Comes with a rubber washer to make waterproof front seal. Optional bezel ring included covers 2 inch hole. UV stabilized. When assembled on a panel with backing nut the front is waterproof IP64. Length is 1-1/2". Diameter with flange is 1-1/2 inches with bezel ring 2.0 inches.