RIO Products Mainstream Sinking Fly Fishing Line - The Mainstream series of fly lines has been developed to meet the needs of the average and novice fly fisher. These lines undergo the same rigorous production processes and quality control standards as all the other RIO fly lines and are manufactured in the USA. The line is built with a slick coating on a supple memory-free core which gives the ultimate best performance. Slightly heavier then standard lines Supple core with a slick coldwater coating Made in the USA Shorter head lengths XS Technology Front Welded Loop Length: 80ft Color: Clear