Makita Spade Handle Drill DS4011 1 2 Inch 8.5 Amp Corded (600 RPM 360 Degree D Handle Ball Bearing Industrial Wood Steel Drilling Material Mixer) Concrete Grinding Cutting and a wide voltage detection and a wide voltage detection range from 12V to 480V 7 16 Inch Quick Change Hex Shank: Heavy duty hex shank prevents chuck slippage and ensures secure lock in fitment in high torque impact wrenches and drill chucks The Makita DS4011 1 2 Inch Spade Handle Drill is an industrial electric rotary tool and batch mixer engineered for boring large diameter penetrations through structural lumber and blending dense masonry compounds Large Diameter Wood & Steel Boring: Driving self feed bits up to 1 1 2 inches into timber joists and twist drills up to 1 2 inch into structural steel plate