Transtar Only 1 Glaze 4218 Pourable Polyester Putty is a two component self leveling polyester finishing putty. Only 1 Glaze 4218 helps reduce body filler staining, and fills pinholes and sand scratches quickly and easily. Only 1 Glaze’s unique reduced viscosity provides improved flow out for use as a finishing coat over body filler on large panels or for small spot repair. Only 1 Glaze is excellent for use on galvanized metal, body filler, steel, aluminum, fiberglass, SMC, two component primer surfacers, OEM topcoats and on many types of plastics. Ideal for repairing hail damage and key scratches. Only 1 is the only finishing putty that your shop will need!