FiberFix 857101004969 Series UV Rigid Patch 3 Pack AS STRONG AS STEEL: The quick permanent solution for all your flat surface repairs. The FiberFix Rigid Patch comes in 3 sizes for easy durable repairs on just about anything! REPAIR ANYTHING ANYTIME ANYWHERE: If you like to break things and want to unbreak them, FiberFix patch is just the thing to fix rain gutters, trash cans, a hole in the wall,or recreational repairs. FIX IT YOURSELF: Prepare surface, place patch over damaged area- press to seal edges. Expose to natural or UV light to cure. In 5-15 minutes, patch will turn from yellow to clear. IF APPLYING OUTDOORS: Make sure to apply the patch in COMPLETE shade or at night until it is ready to cure; otherwise, the UV light from the sun will make it harden before you can place the patch. IF APPLYING INDOORS: Ensure that the patch is being hit DIRECTLY by UV light, whether from sunlight coming through a window, or from a UV flashlight, otherwise the patch will not cure.