pneumatic 1/2" Heavy-Duty Air Reversible Drill with Keyless Chuck, a powerful choice for drilling, honing, reaming, and hole sawing. This reversible motor allow you drive and remove screws with 0.5 hp ( 1/2 hp ), featuring One hand Reversible Lever. Planetary System. Unique Clamp Shaft Deign. Dual Direction Motion Trigger Press. Rubber Jacket Grip. Palm Curve Tail Design. Unique Clamp Shaft Deign: newly designed side handle is used as strength support on all side handle models, just clip ..