The Chef's Choice 440 Manual Diamond Hone Knife Sharpener will give your knives razor-sharp edges with minimal effort. It combines 2-Stage sharpening, precision sharpening angle control and 100% diamond abrasives in an easy-to-use design that is safe for quality knives. It puts a long-lasting double-bevel edge on a broad range of knives, including fine edge (straight edge) kitchen, fishing, hunting and pocket knives. Perfect for the kitchen, tackle box, or even the toolbox. Dishwasher safe. Easy to use right- or left-handed. Made in the USA.