Founded in 1889, Hoffman Diamond Products, formerly known as Drilling Exploration company, is a diamond tool manufacturing company. It supplies diamond tooling to three distinctly different markets: mining, construction and industrial ceramics market. The company s geotechnical products include diamond bits, core barrels, rods, reaming shells, casing shoes and soil sampling tools. It also supplies specialty diamond tooling to the refractory, ceramics and glass industries. Hoffman Diamond Products offers products that include saw blades, thin wall diamond bits, specialty grinding heads and buttons and diamond reamers.