Speed from 10 000 to 20 000 OPM. Tool free release makes accessory changes quick and easy. The quick release lever eliminates the need for a hex. key. Class leading 2.5A motor powers through the toughest applications. Variable speed dial has six speed settings to deliver precision performance thats right for each job. Comfort grips provide better handling and control for optial results. Includes adapter fits most manufacturer's accessories so users are not limited by accessory availability. 2-Years warranty.