Specialty Diamond is Proud to announce we now offer Hardin Concrete Products and Tools. The new Hardin Planetary machine combines proven planetary performance with portability. The Hardin Triad Planetary Polisher is a rugged, planetary powered tool designed to produce a flat, swirl free finish on counter tops, floors, walls, stone, and steps. The unit will grind, hone, polish, and clean concrete, terrazzo, marble, and granite surfaces using diamond abrasives.