Anvil 8700162350, Malleable Iron Pipe Fitting, Waste Nut, 3/4" NPT Female, Galvanized Finish Waste nut for securing pipe to the floor or a wall Female National Pipe Taper (NPT) threads for connecting to a male pipe or fitting Bolt holes to connect to flat surfaces Made from malleable iron for tensile strength and the ability to flex without breaking Galvanized finish resists rust in water, air, and steam applications