Loon UV Fly Tying KitIncludes UV Power Light, and a 1 2 ounce squeeze bottle of the Thick, Thin and Flow UV Finishes. LOON UV CLEAR FLY FINISH remains workable until exposed to direct sunlight or Loon's UV Power Light, at which point it will cure in a matter of seconds. The possibilities are endless! FEATURES: New UV Blocking squeeze bottle and application needles. New Taper Tip needle prevents clogs. Build fly heads and bodies. Instantly cures with sunlight or UV light.