DMT D6FC 6-Inch Dia-Sharp Double-Sided Fine/Coarse Bench Stone Made in: USA Category name: sharpeners Made in USA or imported Double-sided blade sharpener with monocrystalline diamond surface Coarse diamond on one side to restore a neglected edge and fine diamond on reverse side for a razor-sharp edge Diamond grits clearly marked on side of stone No oil is needed-sharpen dry or with water Durable construction will provide years of consistent performance and reliable service