Ultra GSP 100-Denier Thread - Chartreuse - $3.99

The strongest thread on the market boasts steel-like strength for its weight. Made of a gel-spun polyethylene, it's supple and ties flat. 100-denier GSP has all-around versatility for tying fresh- and saltwater flies. Per 50-yd spool. Colors: White, Yellow, Orange, Brown, Red, Olive, Black, Chartreuse. Color: Chartreuse. - $3.99