DMT combined the finer abrasive characteristics of ceramic with a lightweight aluminum base to create an unbreakable, wear-resistant sharpener through a patented process. The 12″ Ceramic Steel comes with the convenience of traditional butcher steel and is designed with a comfortable safety guard equipped handle. Ceramic offers the finest polished edge of all bonded abrasives and the right choice for regular “touch-ups” to maintain a razor-sharp edge. Ceramic surface (7 micron / 2200 mesh) to achieve a polished edge. Rod: 12″ x .5″ (304 mm x 13 mm) Durable construction will provide years of consistent performance and reliable service. For proper tool maintenance, woodworkers, chefs, and other professionals, you can rely on DMT products’ superior quality and versatility.