Nylon 66 Coated Beading Threads for Seed Beads, PinkSize: about 0.1mm in diameter, about 54.68 yards(50m)/roll.âMaterial: This jewelry string is made of Nylon 66, sturdy for use and beautiful looking. âNylon thread coated with a special finish to make it more durable and less likely to unravel. The coating can provide additional protection against wear and tear. âPerfect for weaving with seed beads. The beading string cord is for bracelet, necklace, bead weaving and other jewelry craft projects. âLearn simple and exciting techniques to make jewelry just like you see in department stores, affordable way for DIY to get great style.