Alpha Code Sizing The all-new Mustad signature Single Salmon hook series is designed within the Alfa Code system. This means that the gape opening (distance from the hook point to the shank) on a # 2 Salmon hook from this series will have the same gape as a # 2 R50 wet fly hook, or an O'Shaughnessy S71SS # 2 saltwater hook. The same applies for all larger and smaller sizes in the whole Signature hook series. It is not another system to confuse fly tiers, but THE system, based on the original system of sizing used by Mustad for many, many years, made consistent and simple. Detailed explanation of the AlphaCode system Click here to go to an interactive Signature Explanatory Chart! Download PDF of Signature Explanatory Chart 2009 Characteristics the long and slow natural elegant taper gives a perfect symmetrical body to the fly the point of the hook is UltraPoint, shaped by two carefully designed angles, giving the hook an un-bluntable and very sharp point. the microbarb gives the barb perfect penetration, combined with Mustad's Nor-tempering hardening process, allowing the barb to be squeezed down without breaking. Read more about the Singature Range here: More about Signature Hooks   NEW! Download: Classic to Signature Conversion Guide Mustad Fly Hook Conversion Guide