Product Description: New Complete 80 degree CV (Constant Velocity) Driveline, 1,000 rpm. Minimum C-to-C length: 48"(1210) mm; Total Collapsed length: 58" (1462 mm). Tractor end: 1-3/8" 21 Spline. Implement end:1-3/4" 20 Spline. Star style tubing, type B. Fits John Deere Rotary Cutters. It may be necessary to cut this driveline to length. Verify the length by ensuring that sufficientoverlap of the drive tubes exists in all working positions without the possibility of bottoming out.