This product helps seal the outer wall of any double-wall headlight when installing a hide-away undercover LED or strobe tube. This is a 3 part material designed to seal the outer hole required in double wall headlight installs. This material come in 6" x 12" long strips and can be cut into any desired or required size. This material is chemical resistant, incredibly adhesive, and designed to mold to the curvature of your headlight. Cleaning of the area is recommended before applying this material.