I forget what HP model we have at camp, got it about 10 yrs ago, but it eats 2 inch saplings like a fat kid eats ice cream on a hot day LOL
it does make you a little nervous when its eating , as it can spitr pieces out and they do bounce back at times and again why I said above,
and will say again,
wear safety gear using this thing!
one thing we use it for is on very SOFT muddy area's too soft to drive a tractor on, its been very handy for that type of work