Each pack contains one 40″ piece of 0.019″ diameter Tough Super Flex fiber in brilliant blue. TSF fiber has added durability for use in harsh conditions. The flexibility of TSF makes it great for use in archery sights with sharp bends or exposed fibers. TSF does not flare with heat.

Please note: Blue fibers rely on UV light to produce maximum brightness. This can be achieved by using the fiber outdoors, even in overcast conditions. Additionally, a UV sight light may also be used. Blue fibers may appear dull indoors where UV light is minimal.

Visit our products page to view additional sizes and colors.