Versatile: These convenient Goretex patches allow your headlights to exhale, but won't let moisture in. Used on many OEM Headlights, they're especially perfect for retrofitters! Simple To Use: Drill a small hole in your housings, clean off the surface, then peel off the sticky 3M backing and carefully place the patch over the hole. Two Pack: Each kit includes a pair of patches, enough for a pair of headlights.