These are a very unique piece of history. We are sure there are not to many of these out there that are complete like this set. I believe they use mercury vapor bulbs. However you could very easily switch them over to a different fixture inside to run a different bulb. They have sat in a heated garage for over 40 years. They hung outside a gas station/diner many years ago. The fixtures themselves are lite in weight and in good condition for there age. They could use a cleaning from sitting on the shelf all these years. There are to with concave glass. They were on the sides and the one with flat glass has in the middle. The owners said the concave glass spreads out the light and the center unit with flat glass sent the light straight out. We do have the center section of pipe that holds all three units together to tie them as a set. All sales are final. The item “Vintage Revere Service Station Light Gas Pump Industrial Diner Explosion TEXACO” is in sale since Sunday, July 10, 2016. This item is in the category “Collectibles\Lamps, Lighting\Ceiling Fixtures”. The seller is “ronrizzle1983″ and is located in Pecatonica, Illinois. This item can be shipped to United States.