Westbrass Roman Tub Drain Trim, fits 3-9/16 in. OD and 2-7/8 in. hole-to-hole replacement top only for a roman tub drain. 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.