Bosch 33618-2G 18-Volt Ni-Cad 1/2-Inch Cordless Drill/Driver Kit New features: BLUECORE Battery Technology, Increased torque, Carbide tooth chuck Unibody powertrain maintains alignment between clutch, gearbox and motor for the most durable drivetrain system on the market Steel-reinforced collar enhances durability and protects tool when dropped on the chuck plus DuraShield housing is constructed to withstand real world conditions Highest Torque available powers through the toughest applications with 550 in.-lbs. of torque Two-speed gearbox: 0-450/0-1,500 RPM