Naniwa Chosera Professional is an improved series of Naniwa stones. A magnesium bond material is applied in this series. The Naniwa stones provide such high performance because of the improved formula.
They do not require soaking.
The wear is half compared to the previous Naniwa series.
Naniwa Professional is designed for the basic sharpening and fitting of blades that do not require either a large metal removal or repair. The stone is supplied on a blank; it perfectly fits the TSPROF sharpener holder and others. They allow the sharpening of almost any steel with a hardness from 56HRC to 68HRC
Chosera sharpening stones are used for sharpening knives on guided knife sharpeners. Chosera is a high-end series from Naniwa made of aluminum oxide with magnesia binder. The magnesia binder gives Chosera excellent sharpening quality and performance, and high wear resistance.
All Chosera stones are 6 mm thick and are mounted on high-quality aluminum blanks.
Stone dimensions: 152 × 25 × 6 mm Material: aluminum oxide. Japanese quality. These stones suit Blitz, Blitz 360, Kadet, and K03 knife sharpeners.
Disclaimer. For international markets, Naniwa uses the names "sharpening stone" for Super Stones and "professional stone" for Chosera. Such generic names are confusing. We use more recognizable names "Super Stone" and "Chosera".