NYMO Nylon Beading Thread Size B for Delica or Seed Beads - Black 119 Yards (108 Meters) Made in USA NYMO Nylon Beading Thread Size B for Delica or Seed Beads - Black 119 Yards (108 Meters) Made in USA Black 119 Yards (108 Meters) Made in USA Spooled on compact bobbin Size B is quite fine. 0.20mm thick