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, threads effortlessly and can be used for knotting or crimping. Use smoke FireLine as part of the design. Great for use with size 11/0 Delica® seed beads. UV protection to withstand sunlight. Fits Wide-Eye Needle and #12 English beading needles. Testing for colorfastness is recommended.