Chicago Pneumatic CP789HR - Air Power Drill, General Maintenance, 1/2 in.(13mm), Reversible, Keyed Chuck, Aluminum Housing, Pistol Handle, 0.43 HP/320 W, Stall Torque 15.6 ft. lbf/21.1 NM 500 RPM

Precise Control: Teasing throttle for precise control during operation Reduced Noise Operation: Handle exhaust reduces noise and directs air away from operator and workplace Enhanced Starting Control: Teasing trigger allowing more control to start holes accurately High Durability Construction: Industrial quality Jacobs chuck and gearbox for high durability and long-lasting performance Heavy-Duty Applications: Suitable for heavy drilling, reaming, hole sawing and jobs requiring a lot of torque Powerful Performance: Features 0.43 HP / 320 W motor with stall torque of 15.6 ft. lbf / 21.1 Nm at 500 RPM Robust Design: Aluminum housing construction provides strength and durability for demanding industrial use Versatile Chuck System: 1/2 Inch (13 mm) reversible keyed chuck with pistol handle for comfortable operation