This e-commerce listing features two new radio tubes, the Fleetwood tests  5600 6BQ5/EL84 made in  Japan  and the Electrohome tests  5850 6BQ5/EL84 made in Canada.These vintage tubes and tube sockets are perfect for those looking to replace or upgrade their audio equipment. The Fleetwood 5600 and Electrohome 5850 tubes are compatible with a variety of vintage audio and video equipment, and a new tube tests 5800  on a stark tester.Whether you're a collector or a vintage audio enthusiast, these radio tubes are a must-have addition to your  back up.