Thin hard UV resin creates clear fly-tie coatings that cure quickly.Solarez Fly-Tie Thin Hard Formula has a viscosity similar to 30 wt. motor oil for applying thin, shellac-like clear coats. It cures in seconds with sunlight or a Solarez UV flashlight and is tack-free when cured with Solarez UV light systems.Key Features Thin hard formula applies as a clear, shellac-like coat. Approximate viscosity matches 30 wt. motor oil. Cures in seconds under sunlight or a Solarez UV flashlight. Aliphatic urethane formula resists yellowing with age. Low odor formula. Product Details Size: 5 g. Apply in shade. For reduced heat and shrinkage, irradiate with intense UV light for one second, wait 15 seconds, irradiate again for one second, wait, then finish with 30 full seconds of UV light. Guaranteed tack-free when cured with Solarez UV light systems.