A UV-curing coating for knots.With UV Knot Sense you can smooth and strengthen your newly tied knots immediately. After application, it dries instantly with Loon&';s UV Nano Light, UV Bench Light or with direct sunlight. Also works great for repairing damaged flies and completing household projects. -Ideal for coating knots for strength-Smoothes knots to easily slide through guides-Cures soft and pliableInstantly cures with sunlight or UV light-Quickly repairs damaged flies-1/2 oz