Description: Double side, different tenderness. Kitchen Sharpening Stone has a double sided (120/240) combination grit whetstone for precision sharpening. Firm but porous structure continuously releases small particles, combined with water will sharpen. Small number side for grit coarse sharpening and large number side for grit fine sharpening high hardness. Good choose for kitchen, precision tool, sushi tool and so on. Specification: Material:Pumice Size:Approx. 15 x 5 x 2.5cm/5.91 x 1.97 x 0.98inch Package Includes: 1 Piece Whetstone Note: Please allow little color difference due to different camera or light environment.Please allow 1-3mm differs due to manual measurement