Don't know the answer to your question, but are you sure that you want to put one of those things on your tractor?.........I don't know your circumstances, but personally, I wouldn't..........Seems to me that it might tear up something inside the tractor, or wear out internal parts pre-maturely.........Seems it would put a lot of 'stress' on the PTO parts of the tractor............But, I am just speculating.........For I have never seen one and couldn't telly ya' how it is made or performs.
Travis R