Heavy-Duty 1/4 HP Flex Shaft Grinder & Carver - Foot Pedal Control One of the most versatile power tools we've ever used; cut, grind, buff, carve, sand & more 1/4 HP 110VAC/60Hz motor has lots of torque so bits & accessories won't bog down Foot pedal provides easy speed control, you keep both hands on project; variable speed to 20,000 RPM 42" flex shaft for superior mobility, keyed chuck fits bit shanks 1/16" (1.5mm) to 5/32" (4mm) Hanger lets you take it to your project; includes chuck key & extra set of motor brushes