Model Battery Rail power wrench LJ-LD81901 Rated voltage (DCV) 24-48 Max. torque 3000 N.m motor speed (RPM) 0-3000 optional impact frequency (BPM) 0-5000 optional battery pack capacity (ah) 24-48 operating temperature range (-40 ~ 50 ) operating range m6-m30 torque control adjustable and controllable Recommended by seller