Jobsite Proven for Over 20 Years, Powerful 9.0 AMP motor. Lightweight (6.6 lbs.) for high production work with less fatigue. Lock-on button for continuous operation. Side handle can be installed on either side of the tool. All-ball bearing construction for longer tool life. Spindle lock for easy wheel changes. AC/DC for use with alternative power source. Standard 5/8″ x 11 UNC spindle. Double insulated.