Features:1. It is made of high grade diamond, which is durable and ensures good sharpening results.2. The sharpening stone is small in size, portable and convenient to sharpen more effectively.3. 400/600# grit double-sided sharpening stone is good for coarse grinding or fine grinding.4. Folding plastic shell protects the inner sharpening stone well and makes it convenient to carry, perfect for outdoor use.5.Light weight and compact storage, convenient to use.6.Widely apply to outdoor kife tool, scissor, gardening tool, etc.Specifications:Material: Diamond + PlasticColor: Yellow, Black (Optional)Grit(double sides): 400#, 600#Package Included:1 * Sharpening Knife StoneNote:1.Please allow 1-3 cm differs due to manual measurement.2.Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.