DEWALTs exclusive NANO™-phosphate lithium-ion cells deliver more run time and longer battery life and durability for up to 2000 recharges. The Rotary Hammers compact L-shaped design allows access in tight spaces while providing optimal balance to the user. DEWALT-built high-torque, high-efficiency motor delivers maximum performance in all drilling applications.Cordless Yes Volts 36 Rated RPM 0-1,150 Impact Energy (J) 2.0 ft-lbs Blows Per Minute (BPM) 0-4,400 Keyless Chuck No Chuck Size (in.) 1 Additional Product Specs * 1in concrete maximum * 1/4–5/8in. concrete minimum * SHOCKS™ Active Vibration Control significantly reduces vibration and increases user comfort and productivity * impact energy provides corded power without the cord * Variable speed, reversing switch delivers versatility in all applications * Factory-set clutch reduces sudden, high-torque reactions if bit jams * Electro-pneumatic hammer mechanism for fast penetration and low vibration * 360° side handle for better control and ease of use in tight spaces