The Heavy Duty Full-Size Roller Docker (DD5704) is a metal pin dough docker expertly manufactured by American Metalcraft. Dough dockers are tools used by bakers to help eliminate any possible air pockets that might build up from kneading dough. When baked, the air pockets hidden inside the dough expand due to the heat of the oven and cause large bubbles to form that can ruin the product being baked. However, thoroughly using a dough docker prior baking significantly reduces the formation of bubbles. This dough docker features 3/8 inch (1 cm), stainless steel pins for thorough, everyday use and a durable, solid aluminum handle.