GSP Ultra Thin Backing
Now in a bright new package, our GSP (Gel Spun Poly) ultra thin backing is popular with saltwater fly anglers looking for a small diameter backing. Gives you more capacity to accommodate longer-running saltwater game species. Available in 30# and 50# test in a variety of spool sizes.
30# and 50# test,
in 300, 600, 1200, or 2500 yard spools.