* Nirosta sharpening stone with a double grain size to allow a perfect and clean sharpening of your kitchen knives over time. * Stable support thanks to its non-slip pads, this sharpening stone will always remain stable on your work surface. * Ceramic sharpening stone, PP plastic holder. * Care: always immerse the sharpening stone in water before use. This Fackelmann sharpening stone ensures optimal sharpening for all your knives. The whetstone has two different grit and sits securely in a plastic holder with non-slip pads. With a grain size of 240 (gray), the largest irregularities and nicks can be easily ground to maintain the longevity of your kitchen knives.