This superior specimen line is manufactured exclusively to Fox's usual high standards. Specifically produced to demanding specifications and independantly tested under strict laboratory conditions confirm this line to be the highest quality specimen line yet available. Designed to provide everything the modern angler requires in a specimen monofilament line. With its properties of high abraison resistance, low visibility, high knot strength and superb casting performance you can use this product with complete confidence. Available in 10lb(0.30mm), 12lb(0.34mm), and 15lb(0.39mm).