C-lon Tex 135 Cord, smaller than Tex 400, a little larger than the micro cord. Nylon. Approximately 136 yards (124 meters) per bobbin. Approximately .411mm in diameter, with a breaking strength of 24 lbs. Note - this is almost 3 times the size of the regular bobbins.
Made in U.S.A.. By the pack of 136 yd Bobbin.