Seaguar BasiX is genuine Seaguar fluoro. A mainline that delivers all the benefits of 100% fluorocarbon at the perfect price for any angler. BasiX line is made from 100% custom Seaguar fluorocarbon resins making it invisible underwater and features the kind of knot strength and abrasion resistance you have come to expect from Seaguar. This fluorocarbon is a soft, supple and easy-casting line that comes off a reel smoothly for a worry-free fishing experience.