Knife Sharpener BOJ with Ergonomic Handle and Wheel Sharpening System - Repair and Restore Knives EFFECTIVENESS: The BOJ knife sharpener is a tool so effective you will have a razor sharp knife in just a few strokes. TOUGH AND ERGONOMIC WITH A SOLID SHARPENING WHEEL SYSTEM DESIGN: Ergonomic, with a portable design and easy-to-grip handle with hanging hole. It works well for both right- and left-handed people. Long 4   handle designed to prevent cuts. It will give you many years of great service and will not fall apart even when dropped onto a hard surface. 100% SATISFACTION GUARANTEED OR YOUR MONEY BACK! This patented wheel system has been used for years and years. SAFE AND EASY TO USE: Only one stage is needed. Run the knife blade between the two rollers repeatedly back to front and the BOJ sharpener creates a razor sharp edge in seconds. This sharpener is designed to sharpen steel knives, ceramic knives should not be used with this sharpener. MADE IN-HOUSE FOR DECADES: Founded in 1905, BOJ is the manufacturer and this old fashioned wheel knife sharpener is made in-house in our workshop in Spain for decades.