J78/150W double end halogen tube 1.Life time :up to 2000 hours 2.Base:R7S 3.Wattage:150W 4.size:78mmX9mm double end halogen tube as following features:1,Model:J78/150W tungsten halogen lamp;2,Dimension:78mm(length)X9mm(diameter);3,Base:R7S double ended,white,black,brown is available;4,Technology:two rings support the filament togther with two concaves; 150W R7S double end tungsten halogen tube