The Makita 1/2-inch Spade Handle Drill (model DS4011) features a well-balanced design with a powerful motor engineered for constant power and speed for industrial drilling and mixing applications. The DS4011 has an 8.5 AMP motor that delivers 600 RPM for increased speed and torque, making it ideal for drilling large holes. The powerful motor is engineered for constant speed for efficient mixing performance. The DS4011 has a heavy-duty industrial 1/2" drill chuck, with all ball bearing construction for smooth operation and longer tool life. The rocker switch makes it easy to quickly transition between forward and reverse operation.