Milwaukee M18 1/2 in. Cordless High Torque Impact Wrench with Friction Ring Bare Tool 18 volt 450 ft./lbs.Get the most powerful, most compact, longest running impact wrench in its class. The M18 Cordless Lithium ion 1 2" High Torque Impact Wrench features a Milwaukee 4 pole motor and powerful impact mechanism to deliver a reliable 450 ft lbs of torque with maximum runtime. The Redlithium Extended Capacity Battery Pack (sold separately) delivers more work per charge and more work over pack life than the competitors, as well as best in class performance in