Stud Extender, Accessory Type Stud Extender, Compatible Manufacturer Model Number GD816, ND1912, ND64, NFQ17, Material Stainless Steel, Color Brass, Diameter 9/16 in, Length 7/8 in, Thread Size 9/16 In. (Inner), 7/8 In. (Outer). This item has been restricted from sale in the following state (s): []