DeWalt Die Grinder4. 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 for increased productivity and versatility Convenient paddle switch with lock on button for easy gripping PRODUCT OVERVIEW Complete a wide range of tough grinding applications with the 1 1 2 in. (40mm) Die Grinder, No Lock On. Featuring a high performance 4. 2 Amp motor that delivers 25,000 rpm, this