Features and Benefits: Pressure-fed lubrication system Handle exhaust directs air away from user Adjustable power regulation Maximum torque: 590 ft./lbs. (800 ft./lbs. reverse) Contoured comfort handle The classic IRT231 Series has set the standard for impact performance for over three decades. Refined engineering design has perfected the performance that has made the IRT231 Series the most popular impact ever, rivaled only by IR"s composite impacts. IR"s elite mechanism is the perfect balance between superior power and proven durability. Free speed: 8,000 RPM; weight: 5.8 lb.; length: 7.3 sound dBa: 91.2.