Shimano Limited PRO ISO Fishing Fluorocarbon Leader CL-I34QHigh molecular weight fluorocarbon with excellent strength. Uses the world's highest level raw yarn with increased strength at the molecular level. By enlarging the molecules of the raw material used, the structural unit of the crystal becomes larger and the strength increases. In addition, the number of molecular chains that connect molecules increases, increasing strength and increasing abrasion resistance by 130% (compared to our conventional