ACDelco ARG1214 Li-ion 12-Volt Angle Die Grinder, 16000 RPM, 2 battery included 90 right angle head for use with sanding discs and carbide burrs to provides light-duty narrow space grinding applications Safety Lock Design prevents inadvertent tool starts Overall length 11-7/8-inch No-load speed of 0-16,000 RPM Package includes: 2 x Li-ion 12V Battery Packs, 1 x Quick Charger, and Carrying Case