A hand-held cutting knife with a retractable, disposable razor blade. Depending on its size and durability, a utility knife can be used to cut everything from cardboard to drywall.
Another all-purpose knife, the blade is shaped much like the chef's knife, but is narrower. This all-around useful knife is used for everything from peeling and chopping to slicing and dicing. However, it's better for cutting bigger foods, as it gets a little clumsy in intricate detail. Generally 4" to 7" in length.