Fangrui Product Details Premium Diamond Material - These Sharpening Stones Are Made Of High Quality Diamond Material And Are Durable Enough To Last For Years. The High-strength Body Gives The Stone Better Durability, Making It Thinner And Lighter. Multitasking Knife Sharpener - This Set Contains 4 Different Types Of Grits To Meet Your Various Sharpening Needs, Such As Kitchen Knives, Carpenter Tools, Ceramic Knives, Chisels. All Stones Have A Honeycomb Design Layout For Efficient Sharpening. Easy To Use - The Sharpener Has A Non-slip Base For Easy Control And Use. It Has A Large 5.9x2.5 Inch Face And A Wider Blade For Specific Shape Tools. Do Not Put It In The Dishwasher Or Immerse It In Water. Sturdy And Drinkable - Due To The Increased Hardness, The Sharpener Can Be Made Into A Thin And Light Body. Compared To Other Stone Sharpeners, These Diamond Sharpeners Are Very Portable And Easy To Store In Your Bag. Colour:silver Material:diamond Size: 150 X 63 X 3mm Package Contents: 4 X Diamond Sharpening Plates Only The Above Pac