1. Bulb holder fits for: Mercedes Benz C/B/GLA/GL/GLS Class Series High Beam Light.
2. Used for H7 Halogen upgrade to LED bulbs installation.
3. Please check your car's model before purchase. If you are unsure whether this product is compatible with your vehicle, just pop up the hood and compare this product with the stock headlamp socket.
4. Why need this adapter? Because the LED bulb can't be installed steady when you replace the origin car bulbs, and our adapter is design for solve this problem.
5. Allow you to place the aftermarket H7 LED bulb firmly, quickly back to the original headlamp housing without destroying the original socket.
6. Package Include: 2 pcs LED Headlight Retainers (not include Headlight Bulb).