MKM Professional Series stainless steel ribs have a wonderful edge that leaves a beautiful compressed surface. The stainless steel is high quality and will never rust. Note that these ribs are very rigid and durable, and not at all like flexible “scraper” style metal ribs. These are a tool for a lifetime. Dimensions for the S6 rib: length: 4.125 inches x 1.875 inches // 10.48cm x 4.76cm.