Smith's 50918 Pocket Pal knife sharpener is offered with reversible and replaceable carbide blades and ceramic stones. It has tapered diamond rod for sharpening serrations, pre-set crossed carbides and ceramic stones, which provide the ?ǣPerfect Edge?ǥ every time. Carbides provide quick edge setting, and the specially shaped ceramic stones are designed to give a razor sharp edge on either standard or serrated edges. This knife sharpener comes with a lanyard hole. It is compact, lightweight and durable.