The Chef'sChoice® Professional Diamond Hone® Sharp-N-Hone® Sharpener Model 325 is a cost effective alternative to sharpening services for small commercial kitchens, delicatessens and caterers. This professional two-stage Diamond Hone® knife sharpener for 20 degree class knives incorporates the most advanced technology from Chef'sChoice® to sharpen both straight edge and serrated knives. It creates a novel long lasting edge of unprecedented sharpness in seconds. -How It Works: The unique 100% diamond-plated abrasive disks in Stage 1 remove the old edge and produce the first bevel in seconds. The revolutionary flexible abrasive disks in Stage 2 are made of a proprietary barber-strop-like polymer and sharpen serrated edges and polish straight edges to hair-splitting sharpness. A typical knife can be sharpened in 45 seconds and resharpened in just 15 seconds. -The Chef'sChoice® Sharp-N-Hone® Model 325 is a user friendly sharpening system with built-in precision angle guides that eliminate guesswork and produce consistently excellent edges every time. It safely sharpens the entire range of kitchen knives without ever detempering the blades. -Efficient & Cost-Effective: Kitchen staff can easily and quickly prep meals with knives that are not only sharp on demand, but with edges that last longer and are superior to common factory edges. -With durable diamond abrasives on the Model 325, each sharpening costs just pennies! The benefits of substantial savings combined with the advanced technology of this sharpener and the convenience of "on site" and "on demand" usability make the Chef'sChoice® Sharp-N-Hone® a formidable alternative to outside sharpening services.