If you are looking for a high quality, durable knife that will hold an edge for incredibly long periods of time, then you'll love Puma Knives. Made exclusively in Solingen, Germany Puma Knives are built with proper amount of carbon to make them easy to sharpen while retaining an amazing cutting edge, but also allows a knife to rust more easily unless other trace elements are added to protect oxidation. In their 440C steel, Puma has added about 1% carbon for an incredible edge and about 17% chromium to maintain the temper but inhibit rust. About 0.35% Silicon is also included in the base alloy to deoxidize the steel and enhance the stability of the blade. As well, more trace elements such as manganese, phosphorus, sulfur, and molybdenum are added to increase the ability of the steel, creating an amazing edge with perfect hold once it's formed. These trace elements cause the molecules to align more evenly when cooling to give better structural strength and consistency. This is a more expensive way to make knives, but it is known that every knife that bears the PUMA proof mark really does deliver the promise of the best knife blade in the world. For a great way to make sure you have the best possible knife for all your cutting needs, choose one of these amazing Knives from Puma.