Niigata based whetstone manufacturer Suehiro has a long history of producing high quality, affordable sharpening stones. For decades, quality has been of utmost importance to Suehiro and that is made evident in their sharpening stones. A Suehiro stone bought 30 years ago performs just as well when used today. Suehiro sharpening stones can be found almost everywhere in Japan; from department stores and home goods stores to fine cutlery dealers.