A rolling pin is a kitchen tool used to flatten and shape dough for baking. It typically consists of a cylindrical body, often made of wood, marble, or plastic, with handles on each end. Bakers use rolling pins to create even thickness in dough for items like cookies, pasta, and pie crusts. There are different types of rolling pins, including the traditional tapered style and the more modern French rolling pin, which has no handles. Some rolling pins come with adjustable rings to ensure uniform thickness. Proper use of a rolling pin can greatly improve the quality of baked goods.