Sandwox SX655 Random-orbit Electric Sander is built for easy sanding with one hand, a combination of compact size and ergonomic comfort. A 400W brushless motor delivers consistent power at speeds from 4,000 to 10,000 RPM. This motor requires lower power consumption and generates less heat vs. brushed motors, so it doesn't require added venting and won't accumulate as much dust inside the machine. It is suitable for pre-sanding for polishing to coarse and intermediate sanding on varnish, primer, filler or wood.