product description1. Knife and scissor sharpener comes with 4 slots and has a specially designed slot for scissors. Fine slot: Made of diamond grinding wheel, suitable for grinding blunt knives. Coarse slot: Made of tungsten steel blades, suitable for daily sharpening and very dull tools. Exact-grinding slot: Made of ceramics, which is suitable for meticulous grinding, deburring and polishing the blade. Scissor slot: Made of ceramics, suitable for scissors daily sharpening.2. [Non-Slip Rubber Base & Easy to Use]: Handheld knife sharpener with heavy duty non-slip rubber under its bottom which increases the friction between the sharpener and the countertop to ensure safe operation and provides more stability base when sharpen your knife, safe and labor-saving.3. [Ergonomic Handle & Rubber Hanging Ring]: Manual knife sharpeners is ergonomic and consider your comfort when designing that makes you feel comfortable when sharpening. Rubber handle is very comfortable for a very good grip and it doesn't slip, suitable for both right and left-handed users. The rubber hanging ring design can make it easy for you to place your sharpener and save your place.4. [Easy to Use]: Blade sharpener knife simply position the dull blade on the sharpening slot & enjoy razor-sharpness in just seconds. Only requires three steps: Place the sharpener on the table, hold the non-slip handle firmly in one hand, and hold the knife in the other hand; Put the tail of the knife into the sharpening edge & keep the blade perpendicular to the table & not sway from side to side; Press down with the strength of daily sharpening, pull back, not push and pull back & forth.5. [Use for Most Types of Knives]: Pocket knife sharpener is built to be strong and durable for years of reliable use. Effectively use this sharpener for nearly any type of smooth blade, perfect for sharpening straight stainless steel knives, ideal for survival knives, hunting knives, multi function knive