J-B Weld 8272 MarineWeld Marine Epoxy - 2 oz. Two-part epoxy cold weld system specially formulated for marine applications Great for bonding aluminum, metal, composites, fiberglass and more Sets in 4-6 hours at room temperature and cures dark grey in 15-24 hours Once cured, it can be shaped, tapped, filed, sanded and drilled and will retain its strength above or under water J-B Weld is proudly made in the USA