RIO's Mainstream saltwater fly lines have been developed to meet the overall needs of the average and novice fly fisher, and are designed to optimize rod performance with slightly heavier and shorter head lengths. Every Mainstream line undergoes the same rigorous production processes and quality control standards as all RIO fly lines, and is made in RIO's Idaho manufacturing facility. Each saltwater line is built with a hard, saltwater coating for the best in performance.Targeted to the overall needs of the average fly fisher. Color : blue Line Size Density Line Color Sink Rate 30ft Head Weight Total Head Weight Head Length Total Length SKU 10wt Float Blue Float 305gr (19.8gm) 354gr (22.9gm) 36ft (11m) 80ft (24.4m) 6-20763 11wt Float Blue Float 355gr (23gm) 416gr (27gm) 37ft (11.3m) 80ft (24.4m) 6-20764 12wt Float Blue Float 415gr (26.9gm) 532gr (34.5gm) 38ft (11.6m) 80ft (24.4m) 6-20765 7wt Float Blue Float 197gr (12.8gm) 218gr (14.1gm) 35ft (10.7m) 80ft (24.4m) 6-20760 8wt Float Blue Float 225gr (14.6gm) 244gr (15.8gm) 35ft (10.7m) 80ft (24.4m) 6-20761 9wt Float Blue Float 260gr (16.8gm) 330gr (21.4gm) 35ft (10.7m) 80ft (24.4m) 6-20762