The Finest FireLine Ever! The scientists at Berkley have applied the famous FireLine process to thermally fuse a remarkably strong 8-carrier Dyneema PE fiber braid. The fused 8-carriers create a line that is tougher, rounder and smoother, delivering longer casts than ever before. THE MOST ABRASION-RESISTANT SUPERLINE IN ITS CLASS Compared to classic FireLine, Ultra 8 is: Tougher - 4x More Abrasion Resistant Better Casting - Casts 10% farther