Kärcher is a German manufacturer of several technical products, most known for its high pressure washers. The company mainly aims at cleaning equipment and has been in service since 1935 by Alfred Kärcher.
A pad washer (or pad washer) is a tool that helps to clean polishing pads without removing them from the backing plate. The tool rinses out the pad so it can be used again while detailing. This is often quicker than changing the pad and eliminates the need for a second set of polishing pads.