Description: 4.2 amp, 25,000 rpm motor of the die grinder provides high power and speed for all 1-1/2-inch grinding applications AC/DC capacity pf the electric die grinder works off welding machines and generators for increased productivity and versatility DEWALT die grinder has a convenient paddle switch with lock-on button for easy gripping Precision 1/4-inch collet securely holds all proper accessories (1/8-inch reducing sleeve as optional accessory) This product runs off of AC/DC power 4.2 Amp, 25,000 rpm motor provides high power and speed for all 1-1/2" grinding applications AC/DC capacity works off welding machines and generators