Profile: Hard Rock Tool, Inc. is a manufacturer of tools and supplies for marble , granite and concretes. Our product line includes concrete tools, bridge saw blades, adhesives and power tools. Our brands include Diamant-D™, Hitachi™ and Stone Pro™. Our Alpha silencer III is used for cutting hard granites, marble, porcelain, eng. stone, and crystallized glasses. Our dominator twin is used for fast cutting.