Kitchen iq's diamond deluxe edge grip™ 2-stage knife sharpener is lightweight, portable, and easy to use on either a flat surface or the edge of your countertop or table. Diamond-coated rods and crossed ceramic blades feature pre-set sharpening angles that provide the proper sharpening angle every time. Diamond-coated rods (coarse) provide quick edge-setting capabilities and the ceramic blades (fine) are used for the final edge honing. These two stages offer the capability to put a razor-sharp edge on very dull or damaged blades and touch-up already sharp blades. It comes with non-slip rubber feet and a soft-grip rubber handle for comfort and steadiness when sharpening. The patented design allows for added stability and comfort when using the sharpener on the edge of your countertop or table.