Replacement Tube for General Radiographic Systems (#915-14, 915-16, 915-18, 915-51, 915-52, 915-53, 915-54, 915-55, 915-56, 915-57, 915-58, 915-59, 915-60, 915-62) This 300 KHU X-Ray tube is specifically designed for general radiographic, medium- to heavy-duty X-Ray systems.