This simple to use, 17 ga., 1-1/2 inch tubing, bath waste and overflow tub drain from Westbrass, features a twist-and-close mechanism to easily open and close your tub drainch This style is ideal for waste and overflow drainage. Brass and heavy duty metal construction throughout. Brass and heavy duty metal construction throughout. Available in a variety of stylish finishes, this item is sure to complement your existing fixtures. Westbrass Fine Decorative Plumbing since 1935.