Fulling Mill Pro Thread Flat is a high-performance fly tying thread designed to deliver clean, controlled wraps across a wide range of patterns. Its flat, untwisted construction spreads smoothly on the hook shank, reducing bulk while increasing surface contact for better material control. Available in two denier options, Pro Thread Flat handles everything from technical trout flies to large, material-heavy patterns without sacrificing finish or strength. Flat, untwisted construction minimizes bulk while maintaining grip Two denier options (70 and 210) match fly size and materials Excellent material grip and precise thread control for secure bodies Smooth, even wraps enable clean heads and consistent tension Versatile for trout dries, nymphs, emergers, streamers, and saltwater patterns Single spool design keeps setup simple and reliable For small trout flies and delicate presentations, use 70 denier; for heavier patterns such as streamers, hair wings, and saltwater patterns, opt for 210 denier. Pro Thread Flat maintains finish and strength under pressure, making it a dependable choice when material control and durability matter most.
