Craftsman 1/2" Impact Wrench for $19.99 after adding it to your cart.  Order online for in-store pickup at Sears to lock in the price, and save on shipping.  Otherwise, shipping is $8.20 for a total of $28.19 shipped.  Here is a screenshot for your reference.  The Craftsman impact wrench features an all-metal housing with comfort grip and a rubber bumper nose piece.  It provides 340 ft/lbs. of maximum torque.