Asso Ultraflex is an extremely soft nylon monofilament with no mechanical memory, which allows to make perfect knots. Its excellent ductility makes it easy to handle even for beginners. Suitable for branch lines and perfect as shock leader and ring making. Available in high poundage, suitable for various disciplines. Unlike most soft lines, Asso Ultraflex features a very low stretch and accentuated flexibility. Transparent white color. Particularly suitable for leaders.