• Chuck Dia. : 12mm (1/2") • Rated Voltage (Battery) : 21V Li-ion 4Ah • No Load Speed : 0-2000 Rpm • Max. Torque : 400 N.m • Impact Energy : 3000 BPM • Measuring : 425x370x225mm • Include : - Socket CRV 22mm 1Pcs - Belt Clip Hook 1Pcs - Charger 1 Pcs - Battery 2 Pcs