Please see the pictures and right-away notice that the cleats of the cutter protrude into the side of the cutting disc. This will significantly lessen the cutter’s fasteners from exposure to the demanding force generated during stump grinding, as the cleats share the load along with the fasteners. This means that the fasteners are not likely to be subjected to bending, or shearing off completely, making changing the cutters painless, and the fasteners usually reusable for next new tooth to be installed in its place.
On higher horse powered units that is essential to get the bolts out easier, but because of limited bolt fatigue it significantly eradicates the likelihood that a bolt break and the tooth flying off.
Impact pads between cutter and wheel absorb shock, help with over-tightening issues, and teeth forging surface variations to wheel surface forgiveness. Each cutter will come with one impact pad, as this is an essential part of the cutting system. Each cutter change requires a new pad, which is shipped along in the same box as the cutters, thereby keeping simplicity. And the price per tooth always includes an impact pad automatically.