Gudebrod claim their nylon whipping thread is stronger by weight than steel wire - true or not it definitely is high quality whipping nylon. This is their standard fine (A grade) thread which is pressure dyed with high quality, colour fast dye and is an exceptionally good quality thread for general rod building, decorative diamond wraps on rod butts, or even wrapping lead head jigs and tying bucktails. Diameter: 0.152mm Breaking Strain: 2.7lbs Cobalt Blue - 100 Yard Spool.