3M™ Cut-Off Wheel Tools deliver a fast, smooth cut and the power needed to cut through metal. Designed to optimize the performance of 4-inch (10 cm) 3M™ Cut-Off Wheels (sold separately), this hand-held pneumatic tool features a powerful 0.70 HP motor with over-sized ball bearings on the output spindle and robust spiral bevel gearing, ready for hours of heavy-duty use (power hose and air compressor sold separately).