This stainless steel meat grinder plate is ideal for grinding extra coarse primarily used in the marine industry for the processing of chum. This plate is hubless so it can be used on both sides. During grinding, if the flow slows or the meat is not coming through the plate in nice string form, chances are, the knife, plate or both are dull or worn and need replaced. It is recommended to use the same plate and knife together without putting a new plate with an old knife or vice versa. Be sure to change the knife and plate at the same time to ensure optimal performance. This will also let your grinder work more smoothly. Many people want to purchase meat grinder plates and knives for their grinder, but are not sure about the size to purchase. Here is a chart to help you determine the size of your meat grinder to help you purchase the proper plate or knife for you grinder.