Strong, smooth, flat, lightly waxed, slow building Wapsi Ultra Thread fly tying nylon thread. Wapsi UTC Ultra Thread has been engineered as a fly tying thread from the beginning. It is not an "off the shelf" thread as are many others. All of Ultra Thread's characteristics were carefully chosen to enhance its tying performance. Excellent for the majority of flies.
Wapsi's UTC Ultra Thread allows for more uniform tension and gives the tyer the "feel" for maximum tension. Nylon is the same strength as polyester (given the same denier) and offers the added benefit of more intense colors and a larger range of colors. Because nylon stretches, it grips material tighter and makes the fly more durable.
