The M12 FUEL Cordless Brushless 1/2 in. Stubby Impact Wrench is the industries most compact impact wrench on the marketplace. Greatest access in tight spaces at 4.9 in. in length 250 ft.-lbs. breakaway torque 4-mode drive control Auto-shut off mode reduces over fastening and increases productivity Powered by M12 REDLITHIUM batteries, REDLINK intellegence and POWERSTATE brushless motor Red link plus intelligence prevents damage to the tool and battery due to overloading or overheating REDLITHIUM batteries deliver more work per charge and more work over the life of the battery Inlcudes M12 FUEL Stubby 1/2 in. impact wrench 2555-20, M12 4.0AH battery 48-11-2440, M12 2.0AH battery 48-11-2420, M12 charger 48-59-2401 and bag