General description 10Pcs Set Diamond Whetstone Knife Sharpener includes 10 different pieces of stone with varying grain sizes: 80, 120, 200, 400, 500, 600, 800, 1000, 1500, and 2000. The diamond stones are made from single crystal diamond, ensuring they are smooth, resistant to wear, and long-lasting. This set is ideal for achieving the perfect edge on your knives. Technical specifications Number of pieces: 10 Grain sizes: 80, 120, 200, 400, 500, 600, 800, 1000, 1500, 2000 Size of each whetstone: 16 x 2.4 cm Material: Diamond Color: Black Measurement allowed error: +/- 1-3 cm Usage For polishing, use the following grain sizes: 1000, 1500, 2000 for fine polishing 600, 800 for medium grinding 80-500 for coarse grinding Other information