Correction Stone A correction stone is a whetstone used to flatten the surface of whetstones used for sharpening blades. Maintaining whetstones is very important to maintain their effectiveness and lifespan. First, it is important to clean the whetstone before and after use to remove any metal powder or abrasive particles from the surface. ◎ Flattening ◎ The surface of a whetstone can become uneven with use. This makes it difficult to sharpen blades correctly. Therefore, by using a correction stone and regularly flattening the whetstone, you can keep the surface even. ① Soak in water for 5 to 10 minutes before use. ② Rub the stone with the diagonal groove part touching, and correct it by rubbing back and forth until the whetstone surface is flat. ③ Once it is flat, rinse with water and dry. 【Product Details】 Size: 180mm x 60mm x 25mm Weight: 550g Material: Black silicon carbide 【Notes】 ■ This product is imported. Please note that it is not a King whetstone. ■ There may be imperfections in the details, as well as some scratches or dirt that may occur during the manufacturing process. ■ We inspect the products before shipping, but if there is an initial defect, please contact us via message before leaving a review. Please note that we cannot respond after a review has been submitted.