Product Description: Complete Constant Velocity Tractor Half Shaft. Minimum C-to-C length: 48" (1210) mm. Tractor end:1-3/4" 20 Spline. Star style tubing, type B. For 2580 series. Fits Woods Rotary Cutters;Walterscheid WWE & WWZ 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.