DH walked thru while I was watching that video. He stood over my shoulder and we both drooled. LOL Since it is on what looks like a bobcat I am guessing it is an attachment.
I love it! I would never have enough wood to use it though. I don't even have a chainsaw. We do it all by saw or ax or two person saw. Pant Pant. Well, atleast I have lumberjack arms now.