Jim,
We have one of these and, to be honest, doesn't work very well and sometimes not at all. We have another that was custom-made with a Weedeater motor that does a great job. I'm sure it will make the trip to PSL next month.
Bonnie
I got the one with the Homelite weed eater motor,it works great.
Ken Z has one with an air powered die grinder motor. As many of us can attest his works quite well.