Used for 9006 HB4 halogen upgrade to LED bulbs installation.. Only for halogen headlamps! This will allow you to place any aftermarket LED bulb firmly, quickly on the original headlamp housing without destroying the original socket!. Why do you need this adapterBecause the LED bulb can't be installed steady when you replace the origin car bulbs, our adapter is designed to solve this problem.. Easy to install, directly plug into your factory headlight housing socket, no modification needed..
