The 523 is a 3XL version of the 516. To compensate for the additional leverage generated from the extended length I increased the wire diameter by one size, e.g. 523 #10 and 516 #8 have the same wire...
50 pack of barbless competition nymph hooks. 60 degree eye and 1x heavy. Retainer bend. Black Nickel finish. Sticky Sharp hook that is perfect for tying euro style nymphs. Best used with slotted beads. See our slotted tungsten bead listing for match beads at a great price.