Features 1、The whetstone is made of high‑quality white sapphire material, which is resistant to wear and damage. 2、The professional‑grade whetstone fired with superb craftsmanship is very durable and long lasting. 3、The sharpening stone can be used for a fixed‑angle sharpener, with a glued base, which is easy to use. 4、The precise grit whetstones can grind and polish knives, providing many conveniences for your daily life. 5、It is a good helper for the family kitchen, does not hurt the blade, cuts iron quickly, and has little wear. Specification Item Type: Sharpening Stone Material: White Stones Product Size (Without the Base): Approx. 150 x 20 x 5mm/5.9 x 0.8 x 0.2in Product Specification: 4000 Grits Package List 2 x Sharpening Stone