Togiharu Two-sided Sharpening Stone - #1000/#4000 Grit (1/20) - About the Stone Our two-sided sharpening stones are convenient for beginners, home users, travelers, and professionals. They feature a medium grit sharpening surface on one side and a fine grit finishing surface on the other. Benefits of a #1000/4000 Grit Stone #1000 grit: The basic ..