Yoshihiro Professional Grade Toishi Japanese Whetstone Knife Sharpener Water Stones #3000 Grit (Finishing Stone) Medium stone grit (Nakato): The most frequently used stones. These stones are necessary to maintain the blade's edge. They are not as abrasive as Arato grit stones and are recommended for routine sharpening (From #3000 includs Nagura Conditioning Stone) 3 inches in width that allows for a larger surface area to sharpen your knife more accurately. The height (1) has enough material to provide for years of use. Wooden base affixed on stone as sturdy base Size: 8 x 3 x 1 ; Made in Japan