- Super 3-step system. - Fast efficient and easy to use. - Safe anti-slip and ergonomically designed. -Made of ABS durable kitchen-safe plastic & Stainless Steel. - 3 Stage Knife Sharpener. Slot 1 restores worn-out and damaged knives. Slot 2 refines. them into the original V shape. Slot 3 sharpens to a razor-blade finish. - Heavy duty to last forever. The professional grade that can be used by Mom, Dad, or a. chef on many different kinds of blades and kitchen knives. - Simply pull the blades in each slot in one direction a few times in the 1, 2, and 3. slot sequence and presto, the difference is night and day. - Great control with either right or left hand with an ergonomically designed handle and. anti-slip base, allowing you to comfortably and easily renew all your knives. - Crafted with high-quality materials made to last.