Ultra low visibility 100% fluorocarbon hooklink material. Nearly invisible when submerged, the high density Spectre Fluorocarbon will pin itself to the lakebed and is suitable for a wide range of applications. Originally developed as a hooklink material with medium flexibility, also perfect when used as a concealment leader when targeting particularly wary fish. 15lb/6.8kg and 20lb/9.1kg breaking strains available. 20m per spool.