Hi Carbon Steel, multi-use for dries and wets. Every hook claims to be sharp. Gamakatsu guarantees it. Feel for yourself, but please do so with extreme caution. The conically honed needle points are sticky sharp. If you're not careful, you could be hooked for life,,,,,,in more ways than one. This hook has a heavier shank for nymphs and emergers. Packs of 25.