This Westbrass, simple-to-use COARSE thread bathtub drain plug features a twist and close mechanism to easily open and close your tub drainch NOTE: Be sure to measure to ensure the correct size drain shoe (Coarse or Fine). Do not use plumber's putty for installation use silicone seal. Available in a variety of stylish finishes, this item is sure to complement your existing fixtures. Westbrass Fine Decorative Plumbing since 1935.