Twin Disc Inc is a US-based firm engaged in the manufactures and sale of marine and heavy-duty off-highway power transmission equipment. The company operates its business through two reportable segments; Manufacturing and Distribution. Its products portfolio includes marine transmissions, surface drives, propellers and boat management systems as well as power-shift transmissions, hydraulic torque converters, power take-offs, industrial clutches and controls systems. It derives most of its revenues through the sale of marine and propulsion systems.