Battery Capacities:--18V Li-Ion #Square Drive --1/2" #No Load Speed --0 - 1,600 / 2,100 / 2,800 RPM #Impacts Per Minute --0 - 1,800 / 2,600 / 3,500 IPM #Maximum Torque --210 ft.lbs (280 Nm) #Vibration Level --11.5 m/s2 #Noise Level --96 dB(A) #Overall