One of the best investments you can make for your Euro Rig is to add a Euro Nymphing fly line. Not only do these allow you to use a slimmer butt section on your leader(better sensitivity, less wind disturbance, shorter butt section on leader for tactile feel), you also won't get any sag in you rod guides from excessively heavy fly line. Our Euro Nymph Fly Line is made in the USA with a braid core to our standards. Instead of using a level taper, we use a very slight weight forward design to aid in casting in the event that you actually want to use the fly line. Line thickness is .021" with a core strength of 25lbs. 90ft length.