regalmix bathroom sink drain, vessel sink pop up drain with detachable basket stopper,anti-explosion and anti-clogging drain strainer, sink drain assembly without overflow polished chrome, rwf082a. regalmix bathroom sink drain<br> bathroom sink drain, design precision simple. this is a push-button style drain; simply press the top of the pop-up to close, and another press to open. easy to install, smooth push-button operation. spring mechanism keep the water seal, not to leaking