Peerless PTT188790-OB Single Handle Apex Tub and Shower Trim - Oil Bronze. The PTT188790-OB is a genuine product manufactured by Peerless in a Brushed Nickel finish. This particular part is a Tub and Shower Trim Kit which has a simple yet highly functional wide diameter showerhead and diverter tub spout. The Valve trim has a single handle operation which provides for ease of operation. WaterSense Compliant. ADA Approved. Lifetime Faucet and Finish Warranty.