This is for a pair of HID Concept's H7 adaptors. These H7 to D2S/D2R adaptors allow you to use OEM Philips or Osram D2S/D2R HID bulb on a H7 halogen headlight housing properly without modification.
If you want to use the high quality OEM xenon system with OEM bulbs on H7 halogen headlight housings,, these adaptors are Must-have items! By using these adaptors, the bulbs will stay at the right FOCUS point and will provide a correct lighting beam pattern, and output.