Has anyone tried these I was thinking of putting 1 or more at the butt end of my rod FujiŽ concept guides with alconite rings are lighter, stronger and eliminate the chance of guide-caused tangles. In fact, FujiŽ guides are up to 10% lighter than traditional designs. The low-profile stainless steel black frames have a smooth surface that allows all types of line, including super-braids, to effortlessly slide past. These spinning/casting guides have a one-piece frame. Sizes: 8, 10,12, 16, 20, 25, 30, 40 mm.