Sharpening steel, Pieter's broad knowledge and interest in interior design, architecture, and design objects are great resources for designing bergh's cookware and kitchen items. This sharpener is the perfect extension to the knife collection. It's easy to handle, safe, and durable. The mico-locked diamonds, electro-bonded to create a lightweight but strong shaft that sharpens and realigns, ensure a professional edge every time. The perfect addition to any kitchen to ensure sharp knives.