Sharpening stone Our sharpening stone were made by brown / white aluminum oxide, green / black silicon carbide. They also can be supplied in required size and type. Combination sharpening stone 6" x 2" x 1" (150 x 50 x 25mm) a/a coarse/fine 8" x 2" x 1" (200 x 50 x 25mm) a/a coarse/fine 6" x 2" x 1" (150 x 50 x 25mm) c/c coarse/fine 8" x 2" x 1" (200 x 50 x 25mm) c/c coarse/fine 6" x 2" x 1" (150 x 50 x 25mm) c/gc coarse/fine 8" x 2" x 1" (200 x 50 x 25mm) c/gc coarse/fine By cartons