Chicago Pneumatic CP2141 - 1/4 Inch Hex Air Impact Screwdriver, Reversible, Pistol Handel, Impact clutch (Rocking Dog), Non-shut-off-stall, Max Torque 17.7 ft. lbf / 24 Nm - 13000 RPM 8941021410Valid Replacement for 6151922041 Compactness and high speed for global use For operators working in fastening operations who are looking for a comfortable and low noise tool, the CP2141 is the 1 4" hexagonal pistol impact screwdriver that you need. The CP2141 is a 1 4" hex pistol impact screwdriver with quick change. Perfectly suitable for various MRO applications, it can reach a speed of 13,000 rpm. Operator comfort is ensured with its limited noise