Dynamic Diamond Tooling is now distributing the Dynamic Diamond Grinder (DDG 780), manufactured by GPowermax, of Belgium. Features of the DDG 780 include a 30 1/2-inch grinding surface, variable speed adjustments, easy-to-reach operator controls and a 20-horsepower motor. It is suitable for either wet or dry applications. The Dynamic Diamond grinders use a three-headed planetary system with Flex Plate Technology to grind various concrete surfaces. Diamond tooling can be mounted on the grinders for surface preparation, coatings and mastic removal and concrete polishing. ? (877) 338-5338