Rubber Housing Seal Cap, Which Is Used For Changing The Your Headlight Bulb Seal Cap. Preventing Water, Dust, Moisture Or Other Small Things Out From Your Headlights Or Fog Lights And Make Sure Everything Working Fine. Material Of Premium Silicone Rubber, Designed For Hid And Led Headlight Bulb. Simple Installation. The Size Is Clear In Specification, So You Can Choose The Correct One. No More Drilling To Your Seal Cap To Let The Wire Go In And Out. Package Includes: 2 Pieces Dust Caps