Dia-Sharpr 2½˝ Diamond Mini-Honer sharpener allows for comfortable sharpening, deburring and honing in tight spaces. Easy access tip measures 0.033˝ thick. Diamond surface measures 2½˝ x ¾˝“. Coarse diamond (45 micron / 325 mesh) to quickly restore a neglected edge. Sharpening is fast and easy, with or without water, without the use of messy oils. Built to last through multiple uses.