DEWALT DC233KL 36-Volt Lithium Ion Cordless 1-inch SDS Rotary Hammer Kit with NANO Technology Shocks - Active vibration Control reduces vibration up to 70%, increasing user comfort and productivity Compact L-shape design allows access in tight spaces, while providing optimal balance for the user 1.9 ft-lbs impact energy provides corded power without the cord DEWALT-built high torque, high efficiency motor delivers maximum performance in all drilling and fastening applications DEWALT exclusive lithium-ion cells offer long battery life; durability: 2,000 recharges; variable speed reversible switch delivers increased versatility