SP Tools Inc, a division of SP Air Corporation, introduces the 1/4" Heavy Duty Angle Head Die Grinder, No. SP-7211. Features include an ergonomically-designed cushion-grip handle; a rear exhaust; a built-in power regulator; and a safety throttle lever. This die grinder provides a free speed of 18,000 RPM, is 6-7/8" in length and weighs 1.75 lbs.