Buffer Polisher, 18V Cordless Rotary Polisher, 4Inch & 5Inch Car Polisher with 7 Variable Speed 2Pcs 4.0Ah Battery, 2 Backing Plate, 6 Polishing Pads, 2 Wool Pads for Car Polishing and WaxingVariable Speed With 7 no load variable speed. you can adjust polishing speed by controlling dial according to different applications. No load speed: 380 1600 rpm Rotary SPTA cordless roatry polisher has concentric rotating track. it has great cutting force. can easily remove deep scratches and have better result for polishing. It is good for paint. marble and wood floor polishing and buffing. On Off Switch On Off switch on the side of the polisher.