This is a HUBATH sink hair catcher. It arrived on July 11th, and I tried it on each of the sinks in my house, but it didn't fit. I purchased two at the same time, so I am selling one that is unopened. Since it is unopened, it will be delivered in the same condition as it arrived. The photos show the one that was opened. The drain opening diameter that it can be installed in is from 36mm to 45mm. Please be careful not to make a mistake.