Smith's Pocket Pal Multi-Functional Knife Sharpener features pre-set crossed carbides and ceramic stones, which provides a Great Edge every time. Carbides provide quick edge setting, and the specially shaped ceramic stones are designed to give you a razor-sharp edge on either standard or serrated edges. The carbide and ceramic stones are reversible and replaceable. A fold out, tapered round, diamond coated rod is designed for sharpening serrated as well as standard edges. Unit is compact, lightweight, durable, and comes with a lanyard hole.