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Fluoroflex Plus is 100% fluorocarbon and the strongest, thinnest fluorocarbon on the market with incredible strength. For example: 5 lb for 5x material and is nearly invisible to fish. Fluoroflex® Plus is incredibly supple and ties excellent knots even to nylon tippet. The refractive Index of Fluoroflex® Plus (1.42) in water (1.33) compared to nylon (1. 62) makes it almost invisible to fish and with a Density of 1.72 compared to Nylon (1.15) it breaks surface tension more easily and sinks readily
