Use the Zwilling Pro S 6 inch chef's knife when you need to chop, dice, and cutting large amounts of food. Use this cooks knife by rocking the blade back and forth over the food you're cutting. Think of it as a manual food processor. The 6 inch knife is a bit smaller than most chefs knives. It is useful for smaller tasks or for chefs who aren't comfortable with larger blades. This knife from JA Henckels has a lifetime guarantee, evidence of its quality.