This is a Wema, a German made rotary de-burring or de-nibbing tumble sander. It works as it should. Has variable speed control. The drum turns 0-47 rpm. Drum is geared down from the motor that turns @ 1600 rpm. Machine is 220 volts. Its main use is for de-burring small metal parts, but can be used for other materials as well. The media is a small specialized wood chip added with an abrasive grit added for desired finish. Unit will come with a second wood drum and abrasives.  Drum is a hexagon that is 25" in diameter. Please ask questions. I can take a video of it working if you are serious. I will secure on a pallet and ship via LTL any where in the continental US. Please contact me for cost if you are serious.