R ' D introduces their Ultrasonic Cleaning System that the company feels can be especially effective on intricate parts and small passageways. Features include: A sweep-frequency generator that helps increase the effectiveness of the ultrasonic agitation cleaning. Automatic oil skimming. A cartridge filter that helps extend fluid life. A modular design. A 1,000-watt thermostat-controlled heater with overheat protection. Work shelves with 150-pound work shelf weight capacities. A 50-micron particulate filter. A spring-loaded lid for easier opening and closing. A flexible spout and flow-through brush. Stainless steel work shelves. Made in the U.S.A.