80 in-lbs of maximum torque output provides for a superior power to weight ratio in a variety of fastening applications Adjustable two-position handle allows for operation as both in-line and pistol-grip Variable speed and reversing trigger switch provides 0-500 rpm for fastening and pre-drilling into wood, plastic, and light-gauge metal Industrial quick-release hex-shank chuck allows for quick screwdriver bit change and prevents bit "run out" . Electric brake provides increased productivity 7.2V battery pack allows for longer run-time and charges in one hour.Heavy-duty metal hinge provides secure and sustained two-position lock.