The Quiet OneOnly 79 dBA. * CP"s new Quiet retches are the are the quietest on the market at only 79dBA. * These Hot New High powered ratchet offers the Most Torque at 90 ft. -lbs.190 RPM. * Aircraft quality aluminum for lightweight durability and great balance. * Features CP"s new anti-slip head design which virtually eliminates slippage while reducing the potential for heat build-up, even in long run downs. Applications: * Premium tool for brake work, transmission and engine work when you need extra torque Specifications: * Square Drive in.1/2". * Working Torque Range ft. lb 10-90. * Max Torque @ 90 PSI Reverse ft. lb 90. * Free Speed rpm 190. * Length: 12". * Avg. Air Consumption cfm 4.63 * Actual Air Consumption @ load cfm 18.5 * Air Inlet Thread Size NPTF in.1/4 * Min. Hose Size in.3/8 * Sound Pressure dB(A) 79. * Vibration m/s² 14.8.