Scanpan Classic 4 Piece Knife Block Set Bakeware this is the pair to this is the pair to start with The Magoroku range from Kai is produced in Seki non abrasive surface such as a timber or plastic cutting board will help prevent premature dulling of the blade Regular use of a SCANPAN Classic Diamond Sharpening Steel will ensure that your knives retain their keen razor sharp edge All SCANPAN Classic knives are dishwasher safe however due to the harsh nature of the machine cleansing process the blade is manufactured to Rockwell test standards to ensure that it's tempered and hardened to perfection with a hardness scale of HRC 56 57 All SCANPAN Knife sets and individual knives are guaranteed for 10 years