This is a professional knife sharpener, easy to use by pulling the knife through each slot a few times. The handle is ergonomically shaped for maximum grip, and suitable for both left and right-handed users. 3-Step Knife Sharpening System The 1st diamond sharpening rod repairs and straightens damaged blades. The 2nd slot sharpens to restore its V-shape. The 3rd slot fine tunes for a clean polish. Suitable for most knives. Do not use for ceramic knife and scissors. Premium Quality Professional knife sharpener is crafted from solid Eco-friendly ABS plastic. It's strong and durable. Anti-slip The anti-slip rubber base ensures stability and safety, preventing the sharpener from slipping. How to Use Simply place the blade in each of the slots and gently pull the knife through a few times for fast, effective sharpening. Specifications Material: ABS SS Size: 8 x 1.89 x 2.87 inch Metal Type: STAINLESS STEEL