Renowned for its exceptional strength and versatility, FireLine thermally fused thread for jewelry-making by Berkley is the designer's choice for stringing and weaving projects. This popular jewelry-making thread resists abrasion and threads effortlessly. UV protection to withstand sunlight. Fireline Prewax Braided Bead Thread is perfect for your bead weaving, bead stitching and bead embroidery needs. An excellent choice for projects such as earrings and necklaces. 4-pound tensile strength - 0.005 inch / 0.13mm average diameter.