HAZARDOUS! This item is considered hazardous freight. Additional shipping charges may be applied to your order at time of shipment. - Superior multi-use resin ideal for all do-it-yourself repairs. Holds fiberglass material on vertical surfaces. can be colored using Polyester Pigments. The hardener is a peroxide liquid hardener specifically for polyester resins. *Hardener sold separately. Requires 5 tubes (KDL-5F0607) of hardener.