J-B Weld MarineWeld is a specially formulated two-part Cold-Weld adhesive system which provides strong, lasting repairs for bonding different or similar surfaces, such as metal, composites, fibreglass, and others. Sets in 4-6 hours at room temperature and is fully cured to a dark grey color in 15-24 hours. Once cured, it can be shaped, tapped, filed, sanded and drilled and will retain its strength above or below the waters surface. It's also resistant to petroleum, chemical and acid. Specifications: Bonding Strength: 3, 960PSI.Set Time: 4-6 Hours.Cure Time: 15-24 Hours.Colour When Dry: Dark Grey.Size: 2 x 30ml.