Fischer RC ONE IS4 shaft
The lightest composite shaft of the IS family, the new IS4 is classified as a mid-level performance shaft. Nevertheless, the IS4 shares key technlogies with the high-end shafts. By blending UD carbon with glass fiber, this shaft opens up a multitude of possibilities. While glass fiber guarantees higher impact durability, carbon layers secure strength, which results in a symbiosis of durability, strength and weight.