Smith"s 3 - in - 1 provides a quick, razor sharp edge on any knife or tool... anytime, anywhere! This diamond, carbide and ceramic combo handles all your sharpening needs in a compact, totally transportable package. The fine 750-grit interrupted surface diamond stone gives you the edge on your knives and tools. A pair of specially shaped teardrop ceramic rods provide multi-use sharpening... including everything from flat and serrated-edged knives to hooks and tools. A protective storage lid also serves as a hand guard, while the ceramic rods fit securely into the slots on the bottom of the base. This 3-in-1 is lightweight and durable to handle all your sharpening needs. Get yours today! Smith"s 3-in-1 Sharpening System