VEVOR Slip Clutch PTO Slip Clutch 1 3/8' Smooth Ends Black for PTO Slip Shafts 20CrMnTi Carburized Steel Round Ends Design Adjustable Torque Limiter Protective Friction Discs Compact Structure Wide Application Tension Springs: Adjustable,Adjustment Range: 20 - 55 Horse Power,Color: Black,Friction Discs: Replaceable,Material: 20CrMnTi Carburized Steel,Female & Male End Size: 1-3/8' Round,Rated Torque: 900 nm,Surface Finishing: Painted,Pinhole Size: 1/2'