The line of heavy-duty 18V high-torque impact wrenches includes the IWTH180-01, HTH181-01 and the HTH182-01. The units feature a 10-in. head length, 500 ft.-lbs. of maximum torque, a true flat-anvil design and an all-metal gear train that drives each motor at 1,900 rpm with 2,100 imp. All three tools have an LED flashlight function and are equipped with the Flexible Power System. Each tool comes with two 18V Lithium-Ion FatPacks and a 30-minute charger.