The Berkley FireLine Ice Fishing Line utilizes 8-strand fused technology that provides unmatched abrasion resistance making it 5X’s tougher than conventional braided lines. It has a smooth, supple feel that helps produce a longer cast. Berkley FireLine Ice Fishing Line Fused 8 Strand Superline provides Unmatched toughness and Abrasion Resistance 5X More Abrasion Resistant than leading competitive conventional braids Smooth casting and incredibly sensitive