Montana Fly Company GSP (Gel Spun Polyethylene) Thread – White & Black | 100 & 200 Denier
Montana Fly Company’s GSP Thread is an ultra-strong, low-diameter tying thread designed for anglers who demand maximum durability and control at the vise. Made from Gel Spun Polyethylene, this thread delivers exceptional tensile strength with minimal bulk, making it ideal for spinning hair, cinching down tough materials, and tying large or abrasive patterns.
Available in White and Black and offered in both 100 and 200 denier, MFC GSP Thread allows tiers to match strength and thickness to their specific needs. The smooth, consistent fibers lay flat when needed and bite down securely without unnecessary buildup.
Key Features:
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Extremely high strength-to-diameter ratio
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Perfect for spinning deer hair, bass bugs, saltwater, and large streamer patterns
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Minimal stretch for superior material control
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Smooth, consistent performance on the bobbin
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Available in White and Black
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Offered in 100 denier (fine strength) and 200 denier (maximum strength)
Whether you’re tying delicate yet durable patterns or building heavy-duty flies that take abuse, Montana Fly Company GSP Thread provides the confidence and performance serious fly tiers rely on.
