CP789HR Chicago Pneumatic 1/2" Drill Reversible 500 RPM 15.6lb Tq - The CP789HR 1/2" reversible drill features: a pistol style handle, 1/2 horse power motor, teasing throttle, industrial quality Jacobs chuck with up to 1/2" capacity bit shanks, a durable gear box and ergonomic grip and side handle. 500 RPM 15.6lb Torque. This is the ideal tool for all of your drilling, reaming and hole sawing applications that demand a high torque drill.