If you need a high quality sharpener stone, then our product can be your best choice. It is lightweight and portable. You can change the stone of the grinding tool system. Fine grain, good polishing effect. Make your knife a razor sharp, you can easily cut tough food like meat, bone, etc. Features: 1. Made of high quality material, very durable and strong to use. 2. Lightweight and portable design, friction-resistant, safe and convenient to use. 3. Fine texture, high hardness white corundum are comfortable to use. 4. Two sides deign, convenient for you to choose coarse or fine sharpening. 5. Suitable for kitchen knives, scissors, chopper, shave knife, etc. Specification: Condition:100% Brand New Material: Natural White Corundum Color: As Pictures Shown Type: 3000#&10000#, 3000#&8000#(Optional) Size: 100*25*10mm/3.9*1*0.4in Weight: 87~91g/3.1~3.2oz Package list: 1 * Sharpening Stone Note: 1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.