36 HP@540 RPM For Rotary Cutter Implement end 1 3/8" 6 Spline Friction ClutchUse U-Joint 3013-6014 Collapsed Length38"Driveline ConnectorTractor end: 1 3/8" 6 Spline QD, Implement end: 1 3/8" 6 Spline Friction ClutchID1 3/8"ID 21 3/8"Number of Splines6Rating4SRPM540Spline Count 26