Petty knives are small utility knives of Japanese design. Pettys can vary significantly in both profile and size, ranging from 75mm to 210mm. Petty knives are very similar to the common western paring or utility knife. While there is no hard rule about where a petty and paring knife diverge or what application each is most adept at, pettys are often considered ideal for small and delicate tasks on a cutting board while paring knives are better employed in hand. Anyone interested in a petty should also consider whether a paring or utility knife may also suit their needs.