HID is an acronym for High Intensity Discharge. HID conversion kits refer to a combination of bulbs, ballasts, and sometimes wires harnesses that will convert vehicles operating with regular halogen bulbs to HID Xenon Lighting technology.
LUMENS XTREME LED
LED is an acronym for Light Emitting Diode. XTREME LED conversion kits refer to a combination of led bulbs and led drivers.
Looking for something specific check out the Lumens website.