FiberFix patches are just the thing to fix rain gutters, trash cans, a hole in the wall, or recreational repairs such as boat cracks. 3 Easy Steps 1. Prepare surface 2. Place patch over damaged area - press to seal edges. 3. Expose to Natural or UV light to cure. In 5-15 minutes, patch will turn from yellow to clear when done. The FiberFix Repair Patch comes with 3 patches in 3 different sizes(2X8", 3X3", and 5X5"). UV Flashlight is required for indoor use but not included. If applying indoors - make sure to shine UV light on patch to cure. If applying outdoors - make sure to apply the patch in shade until it is ready to cure; otherwise, the UV light from the sun will make it harden before you can place the patch.