This Japanese whetstone (sharpening stone) from the world-renowned KING Deluxe range features a coarse #250 grit finish on one side and a medium #1000 grit on the other, ideal for field knives and garden tools, as well as chisels and kitchen knives. Use the #250 grit side to restore dull and uneven blades, then finish with the #1000 grit side. This type of absorbent whetstone needs to be soaked in a water for 5 minutes before use. Then sprinkle with water to achieve a smooth surface during sharpening. Rinse and wipe dry with a hand towel when done, and allow to air dry at room temperature. Do not leave in water. Size: 150mm x 36mm x 36mm Made in Tokonama City, Japan *#250 and #1000 are the JIS numbers (Japanese classification for grit size). #120 to #600 JIS stones are designed for dull and uneven blades. #700 to #2000 JIS stones are designed for everyday sharpening.