Textreme Double Thread 30×2 Den is an innovative assembly thread made of extremely fine monofilament polyamide (30 denier), presented as a double strand. This design makes it easy to create dubbing loops: simply separate the two strands, then twist them using a twister. Used as a single strand, it excels at making very small flies and almost invisible tying. Its finesse and strength make it a preferred choice for fly tyers seeking precision and discretion. Packaged in 100-meter spools, it combines practicality, versatility and durability.