Ceramic Knife - 5 Inch Ceramic Utility Knife - Mirror Finish STAY SHARP FOR VERY LONG TIME. Due to its composent (zirconium dioxide) ceramic knives stay sharp much longer than steel knife. EXTRA SHARP 5 inches ceramic knife, perfect for chopping, dicing and mincing. WILL NEVER RUST. Ceramic is chemically stable material, therefore it cannot rust. LIGHTWEIGHT, EASY TO MANIPULATE. You can cut vegetables and cook for hours withtout getting tired. 1 YEAR FULL GUARANTEE. If your ceramic chef knife get damaged by a regular usage, we will send you another free of charge.