Product Description: Complete Constant Velocity Driveline. Minimum C-to-C length: 48" (1210) mm; Total Collapsed C-to-Clength: 58" (1462 mm). Tractor end: 1-3/8" 6 Spline. Implement end: 1-3/4" 20 Spline. Star styletubing, type B. For 2580 series. Fits John Deere Rotary Cutters; Walterscheid WWE series. 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.