Veevus GSP Thread 30D A go-to thread when you need maximum strength with minimal bulk, the Veevus GSP 30D is built for tying flies that demand durability without sacrificing a clean profile. This gel-spun polyethylene thread is incredibly strong for its diameter, making it ideal for everything from small, precise patterns to larger flies where you need to really cinch materials down. Ultra-strong for its size – One of the highest strength-to-diameter ratios available Lays flat and smooth – Helps build clean, tight bodies without unnecessary bulk Great for high-tension tying – Perfect for spinning deer hair, securing wings, and locking in materials Minimal stretch – Gives you better control when applying pressure Versatile use – From small nymphs to streamers and saltwater patterns If you’re looking for a thread that won’t break when you lean on it, the Veevus GSP 30D is a reliable option for pushing materials exactly where you want them.