TONE Co., Ltd. engages in the development, manufacture, and sale of work tools for machinery and automobiles. It also offers power tools for construction and torque measuring equipment. Its products include stainless tools, titanium tools, handle joints, sockets, wrenches, monkey wrench pliers, screwdrivers, and LED lights. It operates through the Domestic and Overseas segments. The company was founded by Gunji Maeda on August 6, 1938 and is headquartered in Osaka, Japan.