Great teeth, quick change out, can be sharpened, 3 cutting edges, inexpensive after initial set up and I'll never own them again! I used the original Greenteeth on a small Blueturd/Husky grinder and blew it to bits. In all fairness, Greenteeth has since released various sizes and a slightly smaller tooth might have been the ticket for that little grinder. However, and this was the real deal breaker for me, the Greenteeth shatter when they hit something hard. I've kept going with half a tooth just to finish the job and switched back to the tried and true Raycos back at the shop. If you have rocks or any other hard stuff in or around the stump, stay away from the Greenteeth. The only way I'd go back to them would be running them only in the lead tooth postion because they really do take a bigger bite on each pass-they even sound different. However, I find the Raycos to be adequate for the job and virtually indestructible. A lot of guys swear by Greenteeth but I found myself swearing at them too many times.
Flame suit on...