The Three in One Knife Sharpener by Cold Steel, model CSKS31SCDR, is designed with a dual sharpening system. It features two pre-angled sharpening stones - one constructed from ceramic and the other from carbide. The carbide sharpening stone is ideal for creating a quick, sharp edge, while the ceramic stone refines the edge into a finer, razor-sharp finish. Additionally, the sharpener includes a fold-out rod, encrusted with diamond particles, specifically designed for sharpening small serrations or gut hooks. For enhanced portability, this highly practical sharpener also features a lanyard hole for easy carry.