The Mustad R75-79580 Signature Streamer Fly Hook provides unparalleled strength, sharpness, and remarkable consistency. Scaled with an optimally proportioned wire diameter, shank length, gap width and barb, the R75 features chemically sharpened points ensuring instant penetration with every strike, and are forged tough using Mustad's exclusive Nor-tempering process for 30% less bends and breaks than comparable models.