Flexible UV resin supports fly tying, knot coating, and wader repair work.Solarez Fly-Tie Flex Formula is a viscous, low-odor formula for flexible finishes on swimmers and flex parts. It can coat knots for added strength and may be used for wader repair. Cure it with a Solarez UV light system for a tack-free finish.Key Features Flexible finish for swimmers and flex parts. Great for coating knots for strength. Viscous formula is easier to work with. Low odor formula cures in seconds with a Solarez UV light system. Product Details Size: 0.5 oz. Apply in shade. Irradiate with intense UV light for five seconds, wait 15 seconds, then irradiate again for five seconds. Repeat the five-second cure and wait cycle a few times. Complete curing with two minutes of continuous UV light. This curing technique reduces heat and shrinkage. Flex Formula requires more light than Thin, Medium, or Thick formulas. Guaranteed tack-free when cured with Solarez UV light systems.