The Craft Kitchen Set of 4 Cheese Knives with Acacia Wood Handles can cut and serve virtually any type of cheese. The flat knife is used on semi-hard to semi-soft cheeses. The knife with holes is used for sticky soft cheese. The holes in the blade prevent cheese from sticking and allows the knife to cut through tacky cheese. The parmesan knife can cut through hard cheese. Use the wide cheese knife to cut hard, crumbly cheese - great for a cheese board.