The serrated blade is used for delicate fruit and vegetables such as tomatoes, mangoes, and kiwi. The regular blade is perfect for peeling fruit and vegetables such as apples, carrots, and potatoes. The blade creates thin sticks from carrots, zucchini, cucumbers and more. Convenient and easy to clean. You just need to rinse it with running water after using. Handwashing recommended preserving quality. Safe and easy to use.