The Husqvarna PG 680 is an excellent choice for applications both large and small and especially for commercial purposes. Smaller in size than the PG 820, the PG 680 is renowned for its maneuverablility and ease of use without sacrificing power and output. - Triple-headed grinder with features and a range of applications previously unavailable. - Dual Drive Technology fully independent control of both planetary and satellite grinding heads in regards to speed and direction of rotation - Extremely high production rates for rapid removal of tough heavy duty surfaces/coatings as well as floor polishing with an industrial and commercial capacity. - Low tool cost. - A flatter, more consistent grinding surface than that offered by other 4 headed machines. - Dustless application when used with a DC 5500, Can be used for both wet and dry grinding. - Wide grinding path. - Ease of maneuverability and enhanced operator control. - Longer machinery service life due to the five-way sealing mechanism, gear driven planetary head, premium quality belt, the spring steel head system and all zinc-plated steel parts.