WEST SYSTEM® Epoxy products make up a versatile epoxy system that can be used for everything from basic long-lasting repairs to the construction of high-performance composites. WEST SYSTEM 105 Epoxy Resin®, Hardeners, Fillers, Additives, Reinforcing Materials, Metering Pumps, and Application Tools were designed and developed with the end-user in mind. Start with the Product Selection Guide to determine which products you need for your specific project.