Color and Size: red plus grey 1.Multi-function: With the 4-stage knife sharpener, you can sharpen blunt knives easily and professionally. Three step sharpening process (coarse, medium, fine). Keeps your kitchen knives brilliantly sharp.2.Ergonomically design: Non-slip rubber base and ergonomic handle bring good cooking experience. The bottom of the knife sharpener has non-slip rubber bases that prevent slipping during use.3.Easy to use: Small and practical, easy to use. Simply place the blade in the sharpening notch and gently pull the knife through a few times, after a few seconds restore your blunt knives (Push down the knives with a certain strength, pull from its base to the tip, don't push back and forth).