Standard B-51209 Specifications Flange Interface Thread: 1-1/16-12UN Inlet Diameter: 7/8 In (22 mm) Weight: .08 lb (36 g) Overall Height: 1 In (25 mm) Standoff Above Flange: 3/8 In (10 mm) Wrench Hex Size: 1-3/8 In Material: Anodized Aluminum Available Accessories Accessories