Cordless Screwdriver, Battery Included / Bare Tool Bare Tool, Voltage 12.0, Chuck Size 1/4 In. Hex Quick Change, No Load RPM 0 to 450/0 to 1700, Max. Torque 325 in.-lb., Brushless Motor Yes, Cordless Tool Battery Type Li-Ion, Battery Capacity 2.0 and 4.0Ah, Clutch Style 1/4 In. Hex Quick Change, Handle Type T, Battery Included No, Battery Pack Replacement 38D763, Tool Length 6.7 In., Tool Weight 2 lb., Includes (1) G4989031