3 Vintage Mcgraw Edison Light Strips Track Fixture Fitting H6600 826S. Shipped with USPS Large Flat Rate Box. I assume these fixtures take Halogen bulbs but I never saw a bulb of the type that would fit. Says Halo lighting Division. These were purchased in 1980 and never used. There is 3 of these fixtures and each one is 17 7/8 inches long. There is a switch on each one that is probably an on/off switch. There is no bulbs included. The center of the bulbs would need to be six sided with a shorter slot on one side and a longer slot on the other.(see pictures). I do not know if they would even make the bulbs anymore that would fit. I do not accept returns.