Features: brand new and high quality Made of durable diamond material, diamond coated material is more efficient than normal whetstone. Mini sharpener designed, diamond coated material is more efficient than normal whetstone. After one use with this diamond sharpening stone, dull knives and battered blades will be restored to for razor sharpness. Easy to take for camping and kitchen garden knives. Wipe the surface of the water stains after using to avoid rust. Recondition all your tools with this kitchen or workshop essential. Specifications: Material: Diamond Size: approx 150x20mm/5.91x0.79 inches Grit: 240/320/1000/1200/1500/2000/3000 Package Includes: 1x Sharpening Stone note: 1.Please allow 1-3cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.