Watco 38190-cp push pull trim kit ,1-5/8″ – 16 thread bushing, chrome plated features: theft-resistant, brass stopper metal strainer body, 1-1/4″ deep metal overflow plate, 3-3/8″ wide designed for heavy-duty use in hotels, motels, andrental property replaceable, drip-proof buna-n-seal adapter bar for changing from two to one-hole patents: u.s. Patent no. 4,720,877 operation: push down to close. Pull to open. No stopperrotation required.