Artificial sinew is a flat waxed polyester thread. Perfect for beading, making dream catchers, stitching leather, native crafts and many other uses requiring a strong thread. Sinew can be easily split into five thinner ends and has a breakpoint of 70 pounds.Details:Available in multiple colors20 yd. (18.29 m) spool length70 lb. (31.75 kg) breakpoint5 plyWaxed polyesterFor ages 16 and up