DETAILS, FICTION AND MIYABIPOKER

It's a 10 diploma angle so it'll keep the proper angle on your Miyabi blades, and also remaining usable for Zwilling and Wusthof santokus and nakiris.  The 2 most important alternatives are German metal and Japanese metal. German steel is softer than Japanese metal. This implies it does not hold a blade likewise--demands more Repeated sharpening--