The Chelsea 348 Series Power Take-Off, or P.T.O., features a cast iron eight-bolt housing and heavy duty ball bearing on the output shaft, giving it a high torque rating and long service life. The eight-bolt housing eliminates the need for adapter plates to simplify installation and eliminate possible leak paths. The 348 Series is an air-shifted, forward- and reverse- speed P.T.O. Its flexible, air-shift design allows you to mount the air-shift cylinder in the best position for maximum clearance. The 348 Series has a torque rating up to 200 ft/lbs (271 Nm).