Semperfli Fly Tying Extreme String (40mm)

Looking to tie flies that demand attention and trigger aggressive strikes? Semperfli’s Extreme String 40mm is the go-to choice for creating lifelike, eye-catching patterns. Designed specifically for predator flies—think pike, musky, saltwater species—this long-fibered synthetic material is loaded with movement in the water.

✅ Bold, Voluminous Profile – Perfect for bulky heads, flashy bodies, or long streamers.
✅ Incredible Motion – Fibers pulse and undulate with every twitch of your line.
✅ Ultra Lightweight – Doesn’t soak up water, so your flies stay light and cast like a dream.
✅ Durable Build – Built to take hits from toothy predators without falling apart.
✅ Wide Range of Colors – Match any hatch, stand out in murky water, or go full UV flash.

Whether you're chasing toothy critters in freshwater or salt, this material helps you build flies that look alive and fish hard.

? Ready to tie your next killer pattern? Grab Semperfli Extreme String and bring your flies to life.

 Ideal for predator flies or shrimp patterns There are 4m / 4.3 yards (approx ) per card of Extreme String (40mm)