No input? Well guess I am the test subject. I ordered one and put it on this weekend. I ordered the:
"VEVOR Shaft, 1-3/8” PTO Drive Shaft, 6 Spline Both Ends PTO Driveline Shaft, Series 4 Tractor PTO Shaft, 49”-71” Brush Hog PTO Shaft, Black PTO Shaft with Slip Clutch for Bush Hog/Finish Mower" Total cost $152.99
So far so good, got about 2 hours of shredding done. It came pre-lubed, shipped to the house in 4 days via Fed Ex. It has 2 bolts with nylon lock nuts for the implement end and standard spring buton on the tractor end. I did grease the yokes a little just to make sure. I have not tried the slip clutch. The whole set up looks just like the one I removed from my Modern Ag shredder. The only issue I found was when I removed the 2 shafts there were a few metal shavings on the end of the female part.