This pull-through sharpener lets you select a precise blade angle, so you can customize sharpening for every knife in your kitchen. Simply turn the dial to the desired angle, or use the recommended settings for European and Asian knives. The sharpener automatically sets both the coarse and fine slots to the exact angle, for consistent results every time. A third slot sharpens serrated blades. Manual two-stage sharpener for Asian, European and serrated knives. Coarse slot with diamond stones for sharpening dull or damaged blades. Fine slot with ceramic rods for finishing the knife edge and everyday light honing and maintenance of already-sharp blades. Serrated slot with ceramic stones for sharpening serrated blades. Adjustable dial with angle settings allows you to sharpen each knife to its original factory angle (from 14 to 24 degrees per side. Soft-touch handle fits comfortably in your hand. Nonslip base offers stability while sharpening.