Hartner is a German manufacturer of precision cutting tools, founded in 1879 and with nearly a century and a half of experience in metal machining. The company develops tooling for drilling, milling, reaming and threading, from high-speed steel through solid carbide to high-performance solutions. KTD focuses on Hartner's four main ranges: drill bits, end mills, thread tools and reamers. These suit CNC machining and production work that calls for accuracy, consistency and a choice of tooling matched to the workpiece material.