DMT Diamond Mini-Hone, 3/4 inch x 4 1/2 inch. Tight space - no worries! Dia-Sharp(R) 2.5 inch Diamond Mini-Hone(R) sharpener with its ergonomically designed handle provides comfortable sharpening, deburring and honing in tight spaces. Easy access tip measures .033 inch thick. Diamond surface measures 2.5 inch x .75 inch. Overall size: 4 1/2 inch x 3/4 inch. Fine diamond (25 micron / 600 mesh) for a razor sharp edge. Color coded red.