Product Description: New 100 Series pull/tow Driveline with Friction Clutch. Driveline minimum C-to-C length: 35" (885mm), Maximum C-to-C length: 52" (1310 mm), Total collapsed length: 45" (1140 mm). Driveline is size5 and rated as a category 4 (47 hp). Tractor end: 1-3/8 6 Spline, Implement end: 1-3/8" 6 spline FF1 friction clutch. Clutch diameter is 7.09" Fits Bush Hog 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.