Amazon.com: Misono AMSO301 Combination Whetstone (Rough。JCK Special Combination Whetstone #400/#1200 Grit。81kCu9STjFL._AC_UF894,。Naniwa/Ebi Mark Japanese Sharpening Stone DX GOUKEN Medium。
Size (L x W x H): 7.1 x 2.4 x 1.2 inches (180 x 60 x 30 mm)
■Manufacturer Part Number: T-4
■ (rough whetstone #280/medium whetstone #1000) size is only the whetstone part.