Feature:1. 4PCS: Knife sharpener stone has four sizes, 120grit, 320grit, 600grit, 1500grit, which are convenient for you to use.2. WIDELY USED: Whetstone knife sharpener is suitable for various types of knives, including kitchen knives, fishing knives, etc.3. WHITE CORUNDUM: Sharpening stone is made of white corundum, high hardness, strong grinding power and low heat generation.4. LIGHTWEIGHT AND PORTABLE: Knife sharpener is small and compact, convenient for you to put anywhere you like, you can also carry it every day without taking up too much space.5. EASY TO USE: When sharpening, water can be added to the sharpener frequently for better lubrication.Specification:Item Type: Knife Sharpening StoneMaterial: White CorundumWeight: Approx. 195g or 6.9ozEach Size: Approx. 150 x 20 x 5mm or 5.9 x 0.8 x 0.2inGrit: 120 Grit, 320 Grit, 600 Grit, 1500 Grit.Package List:4 xKnife Sharpening Stone