Wenger Swibo 6-1/4-Inch Boning Knife, Semi-Flexible Curved Blade 6-1/4-inch boning knife with semi-flexible, curved blade great for boning fish and poultry Developed for butchers and chefs, Swibo line now available for home cooks; stamped blade has a 55-58 Rockwell hardness Manufactured in Switzerland with exclusive custom-blended steel for high-quality, tempered blade resistant to wear and corrosion Comfortable, ergonomic handle is hygienically and permanently sealed to blade; designed with non-slip texture and incorporated bolster for secure grip Dishwasher safe, but washing by hand is recommended; bright yellow color makes it easy to see knife in a sink full of water