Astro Pneumatic. Grey Pneumatic. Air Fittings/Couplers. Ergonomic square-handle design for a positive, comfortable grip. Working torque: 10-50 ft./lbs.; maximum torque: 50 ft./lbs.; free speed: 150 RPM; average air consumption: 3.75 cfm; air inlet thread: 1/4" NPTF; minimum hose size: 3/8"; sound dBA: 96.5; length: 10"; weight: 2.4 lbs.