Solid Brass Bumble Bee Door Knocker finished in polished brass: Cast from solid brass and hand polished. The bees body strikes down on the attached backplate. Easy to install with the two matching screws supplied. Dimensions: (approx) Wingspan: 120mm Height: 105mm Width of body: 52mm Depth: 40mm (1") from the door Weight: 430 gm 46mm distance between two fixing holes, Screw sizes 25mmx6mm