The JET 400245 is a 1/2″‑drive magnesium‑body impact wrench delivering up to 600 ft‑lb reverse torque and 550 ft‑lb forward. Its twin‑hammer mechanism ensures smooth, balanced blows with reduced vibration. Weighing just 5.8 lb and 8¼″ long, it offers strong bolt‑breaking power while remaining comfortable for long use. Optimized for air supply at 90 psi; standard bolt capacity is 5/8″.