Berkley FireLine Thermally Fused Superline is optimized for the spinning reels to be smoother, tougher, and more sensitive. The fused 8-strand Dyneema PE fibers in the Berkley Fireline Superline are resilient. Tested against leading competitive conventional braids, thermally fused Fireline provides up to 5 times stronger abrasion resistance when compared to conventional braided lines. It is simply the strongest, most abrasion-resistant fishing line. Why should you take the chance of losing the fish of a lifetime with a lesser pick? Follow the motto, 'Be prepared,' and make your choice from the Berkley FireLine Fused Superline. Five times more abrasion resistant than leading conventional braidsFused 8 Strand SuperlineSmooth casting and sensitive Berkley FireLine Thermally Fused Superline is made in the U.S.A. TestDiameterDiameter4 lbs.0.005 in.0.12 mm6 lbs.0.006 in.0.15 mm8 lbs.0.007 in.0.17 mm10 lbs.0.008 in.0.20 mm14 lbs.0.009 in.0.24 mm17 lbs.0.011 in.0.27 mm20 lbs.0.012 in.0.30 mm30 lbs.0.015 in.0.38 mm