Fulling Mill Masterclass Fluorocarbon brings a technical revolution into your tackle bag with a new super-strong and super-thin pure fluorocarbon. Supple and easy to knot with great knot strength it is suitable for all fishing disciplines including trout, salmon and saltwater. Features: 7X - 02X are 50m Spools 03X-04X are 40m Spools Unique pure form premium fluorocarbon Technical revolution in design and performance 21st century German precision engineering combined with premium grade Japanese raw materials Market leading density rating coupled with lowest refractory index Superb diameter vs. linear strength ratio, highly abrasion resistant Suitable for all flyfishing disciplines including trout, salmon and saltwater Supplied on a convenient, simple, large arbor spool.