Genuine Arkansas Combination Soft (Medium) and Black Surgical (Ultra Fine) Knife Sharpening Bench Stone Whetstone 8" x 2" x 1" in Wood Box MBC-8-C Combination Arkansas sharpening stone is 8 inches long by 2 inches wide by 1 inch thick Contains Soft (Medium) and Black Surgical (Ultra Fine) stone grades Since these are natural stones colors can vary from stone to stone (see description below). Genuine Arkansas stones are 100% quarried in the Ouachita Mountains of Central Arkansas Come in a fitted wooded box to protect when not in use.