Aluminox Epoxy Sticks are perfect for permanently repairing holes, gouges, cuts and rivet leaks in aluminum boats and RVs. These Epoxy Sticks are also great for sealing leaks in lines, pipe joints, drains, exhaust lines, manifolds and mufflers, and works equally well on other materials including fiberglass, wood and ceramics. Sets in 30 minutes and can be sanded, painted, drilled, tapped and filed. Will not shrink or pull away. 4 oz.