Designed for the higher horsepower machines, what sets the Reverse-S wheel apart from others is the unique placement of the pockets in a reverse-spiral step-out design that creates multiple cutting planes. These planes create a specific cutting pattern that provide a larger overall cutting arc, ensures that the teeth are taking the proper amount of material for each pass, and allowing a faster sweep speed. The unique pocket placement is achieved by using spacers behind the inner pockets, ensuring the teeth mounted in those positions strike the stump first. In a traditional spiral, 2 or more teeth are engaged in the cut at a time. This bogs the motor down, decreases RPM and increases the chip load per tooth which leads to chattering. With 120 degrees of separation between each tooth, the Reverse-S pattern breaks up the traditional spiral by cutting in a 27" arc with only one tooth engaged in the stump at a time. Ships tooled and torqued to spec including hardware needed to install on your existing hub, shaft, bearings or gearbox.