Fast drying, quick penetrating, non-flammable polyurethane emulsion that contains no harmful toluene. Dries completely clear, tough and waterproof. An excellent choice for tying plastic bodied, plastic ribbed or foam flies, whose material is attacked by solvent based systems. The cement is available in a plain bottle or in the "system" which includes a bottle of cement and Loon's unique applicator cap with a 20 gauge needle for clearing stoppages. Both the cement and the thinner are safe for plastic and foam. 1 oz. bottle.