The Dukane Converter/Transducer 110-3122B is a heavy-duty 20 kHz ultrasonic converter designed to convert high-frequency electrical energy into mechanical vibrations for ultrasonic welding systems. It is typically used as a replacement or OEM part in Dukane Ultra Series ultrasonic press and thruster machines, including models like 43A250, 43A255, 43D255, 43E255, 43A260, and 43B260.