Naniwa has been manufacturing quality waterstones for over 60 years in Osaka, Japan. Their selection of Naniwa stones makes it easy for you to find the right stone for your sharpening needs. Their Traditional Stones are high quality, full-size Japanese stones at a very affordable price! Good for people who like the feel of a traditional old-fashioned fired-ceramic vitreous stone which requires soaking before use. The Super Stones are among the most popular composite whetstones made, and an excellent value in a high quality Japanese-made stone. The Professional Stones are widely considered to be the finest artificial whetstones available today.