The Polished Chrome Westbrass D3324-26 1-1/2" Npsm Twist And Close Bathtub Drain This Westbrass, simple to use coarse thread bathtub drain plug features a twist and close mechanism to easily open and close your tub drain. NOTE: Be sure to measure to assure 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. Be sure to check out our other model styles and VISIT OUR WESTBRASS STOREFRONT for more Kitchen and Bath items to stylize your home with convenient functionality and beauty. 1-1/2 in. NPSM twist close style bath tub drain Coarse thread 1-1/2 in. NPSM (1-7/8 in. - 11-1/2 UNC) exterior Twist and lower to close and restrict draining water Heavy duty metal construction