The 20V one battery system allows you to interchange the battery on all 20V HART products. Specs: 1/2" Drill = Battery: 20V Lithium-Ion, RPM (Low-High): 0-440/min 0-1,600/min, Chuck: 1/2" Keyless, Clutch: 24 Positions, Tool Weight 3.0 lbs Impact Driver = Battery: 20V Lithium-Ion Battery, RPM: 0-2,500/min, Torque: Up to 1,700 in/lbs, Chuck: 1/4" Hex.
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