The AIRCAT Pneumatic Impact Wrench Series, feature a low-weight composite housing, a refined twin-hammer mechanism to increase blow frequency and reduce wear, a rear push button for forward/reverse one-handed operation, a titanium finish hammer case and molded-in buffers to protect the tools from side impact. This series is offered in three sizes: the 3/8" drive (No. 1350-XL), the 1/2" drive (No. 1275-XL), and the 3/4" drive (No. 1770-XL). The 1350-XL and 1275-XL feature a patented high/low torque switch over the trigger for instant power change in both forward and reverse. The 1350-XL offers 100 ft-lbs of torque in low and 500 ft-lbs of torque in high, the 1275-XL offers 150 ft-lbs of torque in low and 800 ft-lbs of torque in high, the 1770-XL produces 1,400 ft-lbs of maximum reverse torque and it also features the traditional four-step power management switch in the rear of the tool.