This simple to use bath drain plug from Westbrass features a twist and close mechanism to easily open and close your tub drain. This style is ideal for waste and overflow drainage. Available in a variety of finishes, this item is sure to complement your existing decorative fixtures 1-1/2 in. NPSM twist & close style bath tub drain Coarse Designed by Westbrass, the Westbrass Twist & Close 1-1/2 in. NPSM Coarse Thread Bath Drain in Powdercoated Flat Black is built for lasting quality and everyday use. Shop at OJCommerce and explore our collection with free shipping on every order.