Flat rainbow film, reinforced by a double support of ultra-thin monofilament nylon. Suitable for tying nymph and wet fly bodies, it can also be used to create various parts of flies. Innovative and easy to use material with a bobbin, it can also be used in combination with other materials to create countless combinations of colors and effects. It can also be used for dry flies that do not require a body made of dubbing or yarn. It is not recommended to make the closing knot with Body Fly but we recommend using a classic tying thread. Can be used with a wide range of hook sizes, from size 8 to 20, for both trout and grayling flies. - 35 meter spool - 170 Denier - 0,37 mm width fibers (1/69'' inches)