The new Fulling Mill Masterclass Fluorocarbon has the lowest refractory index of any other fluoro on the market, making it the least visible in water to fish. It’s also the densest allowing it to cut through the surface tension quicker than ever before. Masterclass has a superb Diameter to Strength ratio so you can rest assured that it’s incredibly strong, ultra supple and has great knot strength. With interlocking spools and a tangle-free band, this revolutionary fluorocarbon will certainly help you catch more fish.Created with a premium grade Japanese raw material and produced with 21st Century German precision engineering, this is the most advanced fluorocarbon on the market today. The ideal fluorocarbon tippet for Trout, Grayling, Salmon, Sea Trout and Saltwater anglers.