Westbrass Roman Tub Drain Trim fits 3-9/16 inch OD and 2-7/8 inch hole-to-hole replacement top only, with a 4-1/4 inch tile square, for Roman tub drains Made of solid brass this product is manufactured to fit already installed Roman tub drains from Oatey (#151), Casper (140) Plumbing Products EZ-Test 2 and equivalent models from other manufacturers. Available in a variety of stylish finishes, this item is sure to complement your existing fixtures. Westbrass Fine Decorative Plumbing since 1935.