Silver Thread Fluorocarbon fishing line is virtually invisible under water but has excellent visibility above the water. Fluorocarbon material is very abrasion-resistant and possesses great strength qualities. This product can be used where maximum strength is needed, but visibility must be kept to a minimum. Excellent as a leader on a Carolinae rig or braided line leader when flipping or pitching in clear water. Fluorocarbon gives you sensitivity and low-stretch features not found in other monofilament lines