$62.99 Makita 18V LXT Lithium-Ion Brushless Cordless High-Torque 1/2 Inch Square Drive Impact Wrench 
18V 1/2 Inch Cordless Impact Driver, High Torque 1/2 Impact Wrench, Lithium-Ion Brushless Drill 
Porter-Cable PCC740B 20-Volt 1/2-Inch Cordless LED Impact Wrench - Bare Tool | eBay
