Product Description: Complete Constant Velocity Driveline. C-to-C length: 48" (1210 mm. Tractor end: 1-3/8" 6 Spline.Implement end: 1-3/8" 6 Spline. Star style tubing Type B. For 2580 series. Replaces Walterscheid No. W258012100101. Fits 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.