This is a Kouzaki Aoto. The sharpness is completely different from other Aoto. This stone is chipped but has no streaks or wrinkles.Kouzaki Aoto has the highest polishing power among the Aoto produced in Tanba, and has a fine texture and is highly evaluated. (length x width x height): Approx. 170 x 70 x 65 mm Weight: Approx. 2,100 g Quantity: 1