Anglers can drop down a size or two without sacrificing strength. AMAZINGLY THIN, ASTONISHINGLY STRONG Natural lure action and low visibility are two features that position Stren MagnaThin as a top choice for clear water or line-wary gamefish, yet the defining feature of this remarkable line is its exceptional strength-to-diameter ratio. When strength, thin diameter and casting accuracy count, knowledgeable anglers count on Stren MagnaThin.