Clear liquid polyurethane which strengthens and smooths leader and backing joints. Fuses in seconds when exposed to direct sunlight or you can use a Loon UV Torch on a dull day.
Also an excellent on-stream head cement to repair damaged flies.
PRODUCT TIP :
Apply all UV curable products in full shade or inside, then let the
application cure in full, direct sunlight. These products will not
cure through a window.