Chicago Pneumatic CP7729 - 3/8 Inch Air Impact Wrench, Pistol Handle, Max Torque Reverse Output 415 ft. lbf / 563 Nm, 9400 RPM, Twin Hammer 8941077290Side2Side: Reverse technology for balance & power For operators working in general mechanics applications who are looking for lightweight, high torque tools. This 3 8", 1 2" impact wrench series increases comfort and productivity. A range designed for general maintenance with its Side 2 Side reverse forward technology. Its twin hammer impact mechanism and its composite housing offer high durability. High productivity is ensured with a torque of 450