Cold Steel 3 in 1 Knife Sharpener - The Three in One Knife Sharpener has two pre-angled sharpening stones. One of the stones is ceramic and the other is carbide. The carbide edge can provide you with a quick sharp edge, and the ceramic sharpener can give you a finer, razor-sharp edge. Additionally, there is a fold-out, diamond-coated tapered rod for sharpening serrations or small gut hooks. The Three in One Knife Sharpener is lightweight and includes a lanyard hole for easy carry. Features Coarse Carbide slot; Ceramic slot for fine edge sharpening; Tapered diamond coated rod for sharpening serrated & straight edges; Compact design with lanyard loop;