Specifications: High-grade corundum stone ensures effective sharpening results. Double-sided sharpening design. Equipped with silica gel non-slip base, guarantee the safety sharpening. Simple design but quick and easy to sharpen at the correct angle. Sharpening angle guide is accurate which can guide perfect blade. Just fix the angle guide to the appropriate location of knife blade then begin to sharpen knives. Type: Knife Sharpener Stone Material: Corundum Grit: 400 , 1000 , 3000 , 8000 Features: Double Sided, Blade Sharpening, Easy to Use Length: 18cm or 7.09" (Approx.) Width: 6cm or 2.36" (Approx.) Height: 3cm or 1.18" (Approx.) Notes: Due to the light and screen setting difference, the color of item may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 2 x Knife Sharpener Stones 1 x Base 2 x Silicone Base 1 x Angle Fixer Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.