Berkley® Nanofil Not a mono, fluoro or braid -- The Next Generation in Fishing Line! Our longest casting line! Spinning reel anglers will experience exceptional casting distance and accuracy allowing them to cover more water and catch more fish. Made with 100% Dyneema®, the World's Strongest Fibre, it has an incredibly high strength/diameter ratio, creating our thinnest line per kg test. Winner of 4 international awards, including 2011 Best Fishing Line Product at the Entex and ICAST Show.