Description: 1/2" HEAVY DUTY AIR IMPACT WRENCH (Industrial Level) Durable twin hammer impact mechanism. Pressure-feed lubrication. Adjustable power regulator. Easy to service two-piece construction. Variable speed. High Torque. Sheer power and performance features to tackle the toughest jobs with ease and proven durability and economy. Ideal for tire changing and general assembling work and other workshop applications. Front exhaust.