Smith's SMCCD4 3-in-1 tool sharpener offered, a fine 750-grit interrupted surface diamond stone provides a quick razor sharp edge on any knife or tool. This 3-in-1 tool sharpener features pre-aligned carbide blades, which are reversible and replaceable, for quick edge setting capabilities. A pair of specially shaped teardrop ceramic rods provide multi-use sharpening capabilities, everything from standard to serrated edges along with hooks and tools. Smith's SMCCD4 3-in-1 tool sharpener comes with a protective storage lid serves as a hand guard, and the ceramic rods fit securely into a compartment in the bottom of the base for safe and easy storage.