Gator Patch GP912 UV Cure Fiberglass Reinforced Polyester Patch 9 x12 UV cure fiberglass reinforced repair patch is watertight, impenetrable A prep-peel-stick application that cures simply with UV light in under an hour Repairs almost any surface, will Bond to virtually all materials, moldable around flat or curved areas, dents, joints, or angles Can be drilled, tapped, sanded, or painted within hour Perfect in or out of the water! great for any fiberglass or aluminum boat, kayaks, canoes, tanks, plumbing, and more