Never sharpen your knife again with the NÜEDGE Knives Replaceable Blade Kitchen Knife. Thanks to its instantly replaceable design, you don’t have to worry about dull knives slowing you down. To replace the NÜEDGE blade, push the blade release button on the butt of the handle and slide out the dull blade. Then insert the new ultra-sharp blade and continue your food preparations almost instantly. Additionally, you can insert multiple styles of blades including santoku, butcher or a chef’s blade. NÜEDGE Knives are also recyclable and disposable. When blades become dull, repackage them safely and place them in your recycle bin. Similarly, you can simply throw them into the trash after repackaging them properly in the provided cardboard sleeve. Designed for everyday cooks, NÜEDGE knives can help save time and money.