This Kasumi whetstone has a medium 1200 grit for sharpening dull and blunted stainless steel blades. The whetstone is complete with a silicone mat that helps grip when in use. Complete with a whetstone holder. Dimensions: L18cm x W6.5cm x H2.5cm. Made in Seki, Japan. Compare prices from: Kasumi in Kitchen Tools & Accessories