The cartridge of Ramuc Epoxy Patching Compound is a two-part clear epoxy resin formulated to create a superior bond to all epoxies, polyester resins, fiberglass, metals, and concrete. It is suitable for applications above or below the waterline. The dual-component cartridge acts as a mixing control system to ensure a perfect ratio of Component A and B. It is a low odor formula resistant to chemicals.The Epoxy Patching Compound can be molded and shaped while applying. Its thick formula allows it to fill large cavities in a single application. It can be sanded, machined, cut, filed, planed, drilled, and tapped. It is perfect for filling, filleting, forming, fairing, and fastening. This Epoxy Patching Compound can also be coated with most paints.The manufacturer requires a minimum purchase of 12.