Resins Gelcoat Liquid Hardener MEK Hardening agent for use with all polyester resins and gel coats. Plastic squeeze tube has graduated measure for mixing convenience. Use this Methyl Ethyl Ketone Peroxide catalyst according to the resingel coat label directions. WILL SHIP GROUND ONLY TO THE CONTIGUOUS 48 STATES ONLY SDS California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Fiberglass Fast Ship In Stock Ships Today