Strong, smooth, flat, lightly waxed, slow building fly tying nylon thread. Use Ultra Thread 70 for small midges, nymphs and dry flies size 14 and smaller. It has a breaking strength of about 1 lb. Use Ultra Thread 140 for medium to large flies. Per 100-yd. spool. Please specify thread size and color.
Colors: White, Blue Dun, Dark Brown, Black, Red, Yellow, Olive.