Product Description: New 2580 Series Constant Velocity Tractor Half. 1-3/4" 20 Spline, C-to-C Length: 48" (1210 mm), Tube style B. Fits Amadas Peanut Combines. 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.