Smith's CCD4 "3-in-1" Sharpener can handle all of your sharpening needs. It features pre-aligned carbide blades, which are reversable and replaceable, for quick edge setting capabilities. The Fine 750-grit Interrupted Surface 4" x 1" Diamond Stone provides a quick razor sharp edge on knives and tools. Includes a "Micro Tool Sharpening Pad" for very small edged tools and a hook sharpening groove the lenght of the stone . A pair of specially unique teardrop shaped ceramic rods provide multi-use sharpening capabilities, everything from standard to serrated edges along with hooks and tools. The protective storage lid also serves as a hand guard when using the "V" rods. The ceramic rods fit securely into a compartment in the bottom of the base for safe and easy storage. For more than 100 years Smith's has been in the knife and tool sharpening business. We pride ourselves on our industry reputation as The Edge Experts and today offer a full line of easy-to-use sharpeners from all five major sharpening categories: 100% Natural Arkansas Stones, Diamonds, Ceramics, Bonded Abrasives and Carbides