If you’re lucky enough to have a good knife collection, it’s not enough to simply store your knives safely. You have to keep them sharp and ready. The ZWILLING stainless steel duo sharpener is a wonderful product that will fine-tune all sorts of blades. This sharpener features one slit for coarse blades and another for fine blades. It’s this dual-action ability that separates this product from other sharpeners on the market. ZWILLING also takes your safety into consideration with a rubber non-skid base.