Replacement OEM quality Series 4 PTO shaft with 80 degree Constant Velocity joint with 1-3/8" X 6 spline quick disconnect (Metal Pull Collar) yoke on tractor end and 1-3/8"- 6 spline metal pull collar yoke for the implement side. Overall length is 44.6" Heavy Duty Series 4 fits most larger mower applications, rated 74hp @1000 rpm and 47hp@540 rpm.