The Sylvania CMI lamps are compact gas discharge lamps. These are gas discharge lamps of a high quality with a very long lifespan. The Sylvania CMI gas discharge lamps are predominantly used in shops. This can vary from barbershops to shoe stores, but also in shop windows, museums and galleries. At Budgetlight you have the choice between different bases, like the G12 and G8.5. With these, the difference is mostly in the distance between the pins. A Rx7s fitting has caps on both ends.