ApexTreeService
ArboristSite Operative
Check these out, from the maker of Alpine Magnum chainsaw head stump grinders. I'm not affiliated, called for pricing on Alpine Magnum and he said his teeth cut 40% faster. 30 day $ back on wheel, this design is awsome!
Alpine Rhino Wheel and Teeth for Stump Grinders
Alpine Rhino Wheel and Teeth for Stump Grinders