Nagura Stone Grit 1000, XA-1000 3.0" x 1.0" x 1.0" (75mm x 25mm x 25mm); 2.6 oz (75 g) Creates a slurry on the whetstone surface for sharpening knives, razors, chisels, and blades Cleans the waterstone surface from remaining grits and metal particles Flattens the waterstone surface which becomes convex (warped) with use Can be used on whetstones with grit 1000 - 8000; made in Japan