Semperfli Fluoro Brite Fly Tying Thread

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Born to be different, Semperfli Fluoro Brite Thread can be used as a tying thread or untwist and it becomes a floss. The Fluorescent color can be seen under a UV light. Unlike some manufacturers, all of these threads Fluoresce. Fluorescent materials work best one hour before daylight or one hour after nightfall. This is because even though we can not see them, UV rays from the sun are still being refracted through our atmosphere and helping glow those hot spots. 6/0 - 120 Denier Recommended hook size #10 - #2/0 (Split the thread and use down to #20) Shop the Semperfli Collection Show more