For Emergers, Scuds, Eggs, and Caddis Pupa. Curved shank with wide hook gap Heavy Wire. Package of 25 The use of recent advances in hook technology makes Montana Fly Company Hooks the fly tyer's and fly fisherman's most dependable hook. MFC Hooks are carefully manufactured from H80C high-carbon steel wire. The chemically sharpened needle point offers the best possible penetration. After they are chemically sharpened they are coated with an anti-corrosive finish to prevent rusting.