Bosch 2-Tool 18-Volt Power Tool Combo Kit with Soft Case (Charger Included and 2-Batteries Included)HDS181A durable chuck for better bit retention and great torque transfer HDS181A innovative 18V canned motor: more compact, same power 25618 hard driving, beefy 1,500 In. Lbs. of torque 25618 powerful wrench delivers 3,200 BPM and 2,800 no load RPM HDS181A Compact Tough design with a 5. 7 In. head length and 2. 7 Lbs. weight HDS181A up to 27,000 BPM in hammer mode for masonry HDS181A tough motor produces 600 In. Lbs. of torque HDS181A variable