Ergonomic Design: Our diamond steel knife sharpener features a 2-stage sharpening system that effectively restores knives to optimal sharpness. The first stage uses diamond abrasives to repair and straighten damaged blades, while the second stage refines and polishes the edge for a clean, sharp finish. Designed for comfort and stability, the unit includes a secure suction cup base for safe, slip-resistant operation.Easy and Safe Use: This knife sharpener kit includes diamond, ceramic, and tungsten carbide components for versatile and efficient sharpening. Simply draw the blade through the appropriate slot to quickly restore sharpness. It is suitable for use on a wide range of knives, including those made from hard steel. For best results and to avoid damage, do not saw or pull the knife backward during use.Tungsten Carbide Durable Performance: High-quality tungsten carbide rods provide exceptional hardness, capable of sharpening even the most durable steel blades. Built for long-term use, this stage requires only occasional use when blades become significantly dull to restore a precise cutting edge.Ceramic Rods Precision Realignment: With regular use, knives develop a burra slight bend along the edgethat reduces cutting efficiency. The ceramic rods help realign and remove the burr, restoring the edges precision. Regular use helps maintain sharpness, improves knife longevity, and ensures safer, more effective cutting performance.Content: 1 manual knife sharpener 1 replacement grinding disc