Our sharpening rods made of 100% oxide ceramics provide you with the ultimate finishing touch. The ceramic is harder than any steel and therefore suitable for knives where normal sharpening steel fails. The combination rod removes with its 800 grain enough material for a new basic grind. The ceramic rod with its 3000 grain removes material minimally and polishes the knife. It not only straightens the edge, but also sharpens the blade at the same time. Thus you can also refresh other old knives and help them to new sharpness.