The Original Redi-Edge® Knife Sharpener is unmatched in its design and effectiveness. The convenient “stick” design gives you a sturdy grip while you use the Duromite™ inserts to put the perfect edge on your knife every time. The Redi-Edge® Original’s Duromite™inserts are factory-set at a 40° inclusive angle, maintaining a consistent 20°double edge on your knives.Blaze away with one of the colorful Redi-Edge® Original Knife Sharpeners that still enjoys high demand from a broad range of users. Great for virtually all knife sharpening needs both indoors and out. Ribbed housing provides for a good grip-ability even when wet. “Stick-type” design is machined from military-grade aluminum bar stock for extreme durability, long life, and lightweight. Great for keeping culinary, craft, work or other type knives sharp. The Duromite™ inserts are harder than any knife blade; and factory pre-set to sharpen most knife blades at a 40° inclusive angle to maintain a 20° double cutting edge. The Redi-Edge® Original Knife Sharpener comes with a ballistic black sheath.