This Kikuichi Swedish Gold series is one of our heaviest western knives and is preferred by many chefs who want the quality of a Japanese blade with the weight and design of a European knife. The blade is made from a Swedish Gold Stainless core sandwiched between SUS410 stainless which protects and adds corrosion resistance creating a hefty blade that can withstand the heavy work of a professional kitchen while maintaining a sharp edge for fast cutting. The blade steel contains 15% Chromium, 1.5% Cobalt, and 1% Molybdenum. Ultimately, this alloy gives the knife the ability to withstand daily use and still hold a razor sharp edge. A petty knife is a basic utility knife slightly larger than a pairing knife. Typically petty and utility knives are used on a cutting board as opposed to a paring knife which does better when operated in your hand. They are great for intricate, delicate and light work.