Features and Benefits: 13.0 Amp AC/DC 8 000 rpm motor provides high power and speed for 7 grinding applications High power-to-weight ratio for greater efficiency and reduced user fatigue Adjustable guard can be adjusted to redirect sparks away from user Rear handle design for greater comfort and control External brush caps for easy servicing Sealed ball and roller bearings for extended motor life Spindle lock button allows for single-wrench bit changes This product runs off of AC/DC power The DW840 7 Medium Angle Grinder has a powerful 13 Ampmotor for fast material removal and includes a high power to weight ratioefficiency and reduced fatigue.