These Black Ultra Fine Sharpening Bench Stones are the REAL McCoy! This is the Genuine Arkansas Black Whetstone mined ONLY from the Ouachita Mountain region of Central Arkansas. This is the finest knife sharpening material in the World. This rare stone (approx. 1200 grit) can put a surgical quality edge on any blade. All are packaged in a BEAUTIFUL Hand Crafted Hardwood Box. If you are looking for the Rolls Royce of sharpening stones that will last a LIFETIME, this is it! Makes for a GREAT GIFT!