Drill Kit, Voltage 20V DC, Battery Included, Battery Capacity (2) 4.0 Ah, Cordless Tool Battery Type Li-Ion, Brushless Motor Yes, Number of Batteries 2, 20V MAX* Premium Series, No Load RPM 0 to 575/0 to 1350/0 to 2000, Chuck Size 1/2 in, Max. Power 535 UWO, Max. Torque Not Specified, Battery Included (2) 21RV47, Transmission 3-Speed, Clutch Style Mechanical, Handle Type Pistol Grip, Battery Pack Replacement 21RV47, Chuck Keyless, Tool Length 9 3/8 in, Tool Weight 5.2 lb