General Tool is a privately-owned diamond tool manufacturing company headquartered in Irvine, California. Since the company w ... as established in 1984, our goal has been to provide high-quality diamond tools and the best customer service in the industry. By making a strong commitment to innovation, manufacturing and service; General Tool sets a high standard for the OEM diamond tool industry. General Tool manufactures diamond blades and core bits primarily for the construction, stone and mining industries. Products from General Tool cut and grind a variety of surfaces, including brick, mortar, concrete, granite, engineered stone, tile, and glass. All diamond products from General Tool are made from the highest quality materials and are a result of years of research and development. read more