Textreme Power Thread Micro 25 Denier is a technical polymer tying thread offering exceptional strength for its diameter, up to ten times greater than that of equivalent steel. With a resistance of 1.10 kg, it is perfectly suited to #16 to #22 hooks, for tying small dry flies and nymphs. Its finesse allows you to create smooth, even underbodies, but also to work with demanding materials such as elk or deer hair, without the risk of breakage. Thanks to its construction, it can be split easily to create dubbing loop assemblies, without the need to double the wire. Available in black (a solid color that won't fade) and natural white (easy to color with a marker), it's a universal wire that's fine, discreet and robust. Packaged in 100-meter spools, it requires a ceramic-tipped spool-holder for optimum use. A must-have for fabricators looking for finesse and strength in their imitations.