Features and Benefits: 
Patented Drive Xchange System™: Helps you get more versatility, torque, and control out of your impact wrench. With 3/8," 1/2", and 3/4" drive options and 5 different anvil lengths, you can do more work with less equipment.
Powerful Versatility: 1,500 ft.-lbs. of breakaway torque from a unique patented motor design.
Quiet: 4 decibels quieter running from a patented motor design.
Patented Direct Greasing System: Greasing your tool has never been easier. Directly grease the tool�s hammer for more efficient operation and increased run time.
Reliable Performance: Stay working, and at peak power by quickly replacing worn or broken anvils.
Ergonomic: Smaller, lighter and better balanced design under 4.5 lbs. and 7.4" overall length.