H7 globes are common in many european cars such as BMW, Audi & Mercedes. They have a wide round base with a single lug to guide the globe into place. Like all HID Xenon globes, they have the same glass section, it's only the base that differes between socket types. H7 HID bulbs come in all colour temperatures (Kelvin rating) in our Supervision kits, but only 4300k or 6000k in the genuine Philips kits. The H7 bulbs will last around 3000 hours if driven by a 35 watt ballast, or around 2000 hours with a 55 watt ballast.