The 20V one battery system allows you to interchange the battery on all 20V HART products. It powers all HART 20V tools, outdoor, automotive and lifestyle items This product comes with a battery and charger Drills through concrete, brick and masonry when in hammer mode Increased durability with heavy duty metal chuck 24 position clutch for adjusting torque while driving fasteners Included Auxilary Handle allows stability and control during high torque applications 2 Speed Gearbox for optimizing speed and control LED work light for enhanced visibility Convenient on-board bit storage Includes: 1/2" Hammer Drill, (1) 1.5Ah 20V Lithium-Ion Battery, Auxilary Handle, Fast Charger, Double-Ended Bit and Operator's Manual Specs: Battery: 20V Lithium-Ion Battery, RPM (Low-High): 0-375/min 0-1,600/min, BPM (Low-High): 0-5,600/min 0-24,000/min, Chuck: 1/2" Metal Keyless, Clutch: 24 Positions, Tool Weight: 3.25 lbs.