Stanley Proto J150WP 1/2-inch Square Drive Pistol Grip Impact Wrench offers class leading 1260 foot pounds of breakaway torque while weighing only 4. 6 pounds. The titanium housing helps to reduce weight, improve balance and ensure maximum durability. Ergonomically designed handle-forward design greatly improves balance and control, helping to reduce operator fatigue. The robust twin hammer mechanism for efficient energy transfer and long service life. The Ambidextrous forward/reverse lever can be actuated with a single hand, even with gloves on. The three position power regulator for forward rotation provides great operational control while reverse rotation operates at maximum power for highest breakaway torque. The feather throttle provides maximum operator control and a side-fed air motor for maximum power and control. The machined motor housing reduces the number of parts, creating precision alignment, reducing wear, increasing efficiency and simplifying maintenance.