Knife Sharpeners descriptions We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Diamond Ultra Thin Knife Sharpener Grinder Stone. FEATURES: HIGH-QUALITY MATERIAL: This Sharpener Stone Uses Diamond As the Abrasive, High Hardness Material, Which Works More Effectively. PORTABLE TOOL: Mini Size Design for Camping, or As a Kitchen, Garden Sharpening Tool. HIGH PERFORMANCE: It is More Efficient Than Ordinary Sharpener Stone and Not Easy to Damage the Edges. SHEATH DESIGN: Lightweight, Easy to Carry and Use; when Not in Use, You Can Put It into the Sheath, It Can Protect the Tool and Also for Convenient Storage. APPLICATION: A Pleasing and Attractive Addition to Any Kitchen or Work Area. Suitable for Grinding of Fine Joints Such As Knife, Abrasives, Stone, Ceramics and Hard Alloys .