All I can say is that it's very powerful and effective! He has used it twice so far and he loves it. I hope the pad on this one lasts as long. When I returned, the sander had gone to tool heaven. Now, this Sunex Tools sander does all the heavy duty sander.
Sunex Tools SX203N Features & Specs
Motor insulate ed housing allows quiet operat ion
Built-in regulat or for positive speed control
Ball bearing construction for vibrat ion-free performance
Replaced brushes, pads in regular intervals, as expected. I may just not be emptying it soon enough. Well made and can go for as long as you need. It has done everything I have needed it to do. Prior to this, I was doing the polishing by hand.