Polishing disc for sharpening stones. Returns a whetstone to its original abilities. Polishing discs are used when a stone is clogged with dirt and its sharpening capacity decreases. Each disc has two surfaces - a front with two grooves and a flat smooth back. Both surfaces can be used. The grooved surface will give a slightly thinner result. We recommend polishing the surface every time a blade needs to be sharpened. By keeping the sharpening surface in perfect condition, you optimize the performance of the sharpening stone. It is not necessary to immerse the disc in water in advance, but it must be wet when using it. Height: 2 cm, Diameter: 7 cm, Origin: Japan, Brand: Shapton Net Weight: 260 g. Shapton is one of the most prestigious brands of Japanese sharpening stones. The company is based in Tochigi Province, Japan. Shapton stones are excellent for sharpening due to their high abrasive content - you can form an edge in no time.