This toothed disc is a working component of a disc harrow, cutting and mixing soil as the implement moves forward. It mounts on the harrow gang shaft, where its serrated edge breaks clods and incorporates residue into the topsoil. The 12 teeth on the circumference provide aggressive soil engagement, reducing the draft force required compared to a plain disc. A worn or blunted tooth pattern reduces cutting efficiency, leading to uneven residue incorporation and increased power demand from the tractor. The disc is designed to match the original hub and spacer stack on the gang, so no additional shimming is needed during installation. When replacing, torque the mounting bolts to the implement manufacturer's specification.