Rex-Lith is a two-component polyester filler used for recreating corners and repairing large gouges on wood and laminate surfaces. This filler is durable and can be pre-colored to achieve the best color match. After the hardener is added, you can expect durable results in a matter of minutes. Leveling this hard material is best achieved by using the Metal Planer. Rex-Lith is available in white, transparent, or wood tone.