Mercer Culinary Millennia Replacement Pizza Wheel, 4 Inch, Stainless Steel - QUALITY CONSTRUCTION: High-carbon Japanese steel blade for durability - SUPERIOR DESIGN: Precision ground razor sharp edge for high performance - COMPATIBILITY: Made to be a replacement blade for Mercer Millennia pizza cutter models M18604BK, M18604PU, M18604WH, M18604RD, M18604GR, and M18604BR - EASY CARE: To maximize the performance and longevity of your Mercer tools, carefully wash by hand with warm water and mild soap; rinse and dry completely with a soft towel. Do not place in dishwasher or submerge for long periods of time - MERCER CULINARY MILLENNIA SERIES: Innovative features and unparalleled performance to meet the demands of todays professional chefs and home cooking enthusiasts