Flat metallic film, reinforced with a special double polyamide mono filament. Highly suitable for ribbing or for bodies of small and very small flies. Perfect material for small nymphs like perdigones for grayling or selective trout. To increase its strength, it is recommended to coat it with UV resin or Buzzer Wrap. To be used particularly on hooks from #18 to #22. - 50 meter spool - 90 Denier - Fibers of 0.25 mm width (1/100'' inches)