What an awesome new attachment! Most people don't even know this exist. Rather than buying an $6000 stump grinder get this $1000 bit and put it on your auger drive. This kind of works like a pencil sharpener grinding down the stump.
Here are a few other things to keep in mind:
The 10" bit will probably be more productive than the 14" bit in most cases.
We like the hex shaft so pins won't sheer off.
This can be used on pretty much any auger drive. Connect this to a tractor, skid steer, compact track loader, excavator or mini loader.