OEMTOOLS 24481 Impact Wrench (Heavy Duty 1/2 in. Drive Li-Ion), 1 Pack Anvil: 1/2 In. 2 Speed Transmission: 0-2,200 RPM and 0-2,900 IPM Nut Busting Torque: 300 Ft/Lbs. Tightening Torque: 260 Ft/Lbs. Includes 4 Ah Li-ion Rechargeable Battery with Charging Station