DEWALT DW840 7-Inch Medium Angle Grinder Plastic / Metal Imported 13.0 Amp AC/DC, 8,000 rpm motor provides high power and speed for 7-inch grinding applications High power-to-weight ratio for greater efficiency and reduced user fatigue Keyless adjustable guard provides tool-free guard adjustments, increasing productivity Rear handle design for greater comfort and control External brush caps for easy servicing Sealed ball and roller bearings for extended motor life