The base tying thread par excellence. Designed through a particular process with parallel bonded filaments, it is a thread with an optimum tensile strength compared to its size. Its unique structure makes it an easy to use yarn for the tying of most imitations (dry flies, CDC flies, nymphs and streamers for small trouts), suggested also for thin and uniform bodies and for head closures. Version 8/0, thanks to its thin size very close to a 12/0, it is suggested for the tying of small imitations on hooks from #14 to #24. Version 6/0 is suitable for almost all the imitations on hooks ranging from size #8 to #18