The Maglite LMXA601 6 Cell MAG-NUM STAR Xenon Replacement Bulb for 6D & 6C Maglite. They are up to 96% brighter than previous MAG-NUM STAR bulbs and use pressurised Xenon gas for improved efficiency. The blubs are fitted with a tougher glass housing and a stronger filament. These \'Second Generation\' Magnum Star Xenon bulbs are now tested at up to 96% brighter than the previous Magnum Star bulbs, so if you have an older Maglite, upgrade today and experience the next generation in Magnum Star advanced lamp technology.