Dustproof nose design. Forward & reverse control to adjust control. Latch type, chuck bur firmly. Features : - Max.: 20,000 rpm :(125,663.7 rad.min-1). - Min.: 12,000 rpm (75,398.2 rad.min-1). Sound Level :Max.: 70 dB , Min.: 60 dB. **For further product information , please contact Chat Support**