Semperfli Nano Silk 200D Streamer Fly Tying Thread

Discover the next evolution in fly tying thread. Built on the proven reputation of ultra-strong GSP, this advanced formula delivers deeper, dope-dyed color embedded directly into the raw fibers during extrusion—so it will never lighten or run. With more GSP per spool than typical volume manufacturers and the strongest strength-to-denier performance, it offers unmatched durability and reliability at the vise.

Designed specifically for streamer and predator patterns, its flat profile also excels for chironomids, traditional flies, and ribbing. Finer than many common 6/0 polyester threads yet far stronger than polyester or rayon, it resists breakage under heavy tension while still allowing you to completely flatten the thread for slim, clean wraps and precise control.

Key benefits:

• Dope-dyed GSP for permanent, fade-free color with zero bleed
• Exceptional strength per denier for secure, confidence-inspiring tying
• Flat, smooth profile ideal for streamlined bodies and tidy heads
• Flattens fully for minimal bulk and superior thread control
• Optimized for streamers, predators, chironomids, and classic patterns

Whether you’re spinning deer hair, locking in bulky materials, or building slim ribbing, this thread delivers the power, finesse, and color stability serious tiers demand. Explore the stunning range of no-run, deeply saturated shades and elevate every pattern from bench to bank.