Cordless Screwgun Kit, Cordless Screwgun Kit, Autofeed Yes, Chuck Size 1/4 in, Battery Included / Bare Tool Battery Included, Voltage 20.0, Max. Torque Not Rated, No Load RPM 4400, Clutch Style Adjustable, Series 20V MAX(TM), Cordless, Brushless Motor Yes, Handle Type Pistol, Cordless Tool Battery Type Li-Ion, Battery Capacity 4.0Ah, Battery Included 21RV47, Battery Pack Replacement 21RV47