The DMT DuoSharp's hardcoat surface offers significantly greater durability and resistance, especially when used for sharpening extremely hard materials such as ceramic blades or powder metallurgy steels. While conventional diamond sharpening stones can wear down more quickly in these demanding applications, the specially developed hardcoat coating is designed to withstand the high stresses and ensure consistent, precise sharpening performance for years. Furthermore, the microcrystalline diamond structure enables faster and more efficient honing compared to conventional stones.