The ultimate line for spinning reels, Berkley's NanoFil Uni-Filament Fishing Line delivers the ultimate in casting and sensitivity. Not a monofilament or braid, NanoFil Uni-Filament is the next generation of fishing line featuring unified filament technology which molecularly links and shapes hundreds of Dyneema nanofilaments into unified filament fishing line. And since Dyneema nanofilaments are stronger-than-steel, NanoFil has a thin diameter and is incredibly strong. This advanced construction process also makes NanoFil Uni-Filament easy to cast, exceptionally sensitive and virtually free of memory and line tangles. NanoFil is optimized for use on spinning reels, and its ultra-thin diameter may dig into baitcast reels during hook-sets.