Twin Disc, Incorporated designs, manufactures and sells marine and heavy duty off-highway power transmission equipment. The Company operates through two segments: manufacturing and distribution. Its products include marine transmissions, azimuth drives, surface drives, propellers and boat management systems, as well as power-shift transmissions, hydraulic torque converters, power take-offs, industrial clutches and controls systems. Its industrial products include clutches, power take-offs and pump drives sold to the agriculture, recycling, construction and oil and gas markets. Its land-based transmission products include applications for oilfield and natural gas, military, and airport rescue and firefighting. The marine and propulsion systems include marine transmission, azimuth drives, controls, surface drives, propellers and boat management systems for the global commercial marine, pleasure craft and patrol boat markets.