About this item. 4-in-1 Knife Sharpener Innovative 4-slot knife sharpeners help restore your knives to like-new condition. Constructed from strong TP rubber (not cheap PVC) and features durable blade slots made of ceramic rod metal (to help keep blades shiny), tungsten steel (to easily remove burrs) and diamond (for easy straightening of damaged metal). And special scissors sharpening groove. ERGONOMIC DESIGN Diamond steel knife sharpener has a TPR base makes the kitchen knife sharpener stable and easy to hold throughout the sharpening process, quickly accidental injuries. LOVVIY kitchen knife sharpener with ergonomic handle, right or left, best kitchen knife sharpener. Easy to use Small and easy to use manual sharpener. Simply place the blade in the sharpening notch and gently pull the knife through a few times, after a few seconds restore your dull knives (lower the knives with some force, pull from its base to the tip, do not push back and more). Press and turn the rotary knob, you can adjust the angle of the sharpening slots to meet your different demands for different knives. Widely Application Effectively use this ceramic knife sharpener for almost any kind of blade smooth; use on most kitchen knives like your chefs knife, slicing knife, utility knife, paring knife, utility knife or any other non-serrated blade; not for use with serrated blades or scissors. Satisfactory Service LOVVIY Professional Kitchen Knife Sharpener offers refund or replacement. If you have any questions, please contact us, you will enjoy 100% customer service.