RIO 'BONEFISH' Floating Fly Lines with WELDED LOOPS INSTALLED on both ends. Unique new taper design allows fast loading, precise casting and presentations at close range, or to the horizon! A hard coating with a medium-stiff core results in longer casts and a line that holds up to the heat in extreme tropical conditions. 100-ft line. Blue running line with Sand head. WF5F thru WF9F.