Smith's PP1 Pocket Pal Multifunction Sharpener, Grey Tapered Round Diamond Coated Rod for Sharpening Serrated and Standard Edges Carbide Blades (Coarse CARBIDE Slot) Quickly Set Your Edge; Ceramic Stones (Fine CERAMIC slot) Give You a Razor Sharp Edge Reversible and Replaceable Carbide and Ceramic Stones for Extended Sharpening Lanyard hole for Carrying Preset Sharpening Angles provide Guaranteed Results