The 5.5-inch Utility Knife is an everyday essential, designed to cleanly slice through foods with ease. These unique octagonal handles are designed for a comfortable grip, making each knife feel like an extension of the user's hand. Each blade goes through our proprietary ULTRA6 heat treatment for incredible strength and durability. Lifetime Warranty against defects in materials and/or craftsmanship. Hand-sharpened knife Forged from 67 layers of Cangshan proprietary X-7 Damascus Steel 60 +/- 2 Rockwell Hardness Rating G-10 fiberglass octagonal handle Full-tang knife blade with a hammered texture Blades are sharpened to a precise 16-degree angle Hand wash only