1. Knife sharpening aid set: You will receive 2 grinding aids, sufficient to meet your regular knife sharpening needs. The grinding aid provides the optimal grinding angle and is suitable for use with a whetstone for quick and precise sharpening. 2. Improved : The knife grinding aid helps you maintain a certain angle when sharpening the knife and apply a reliable and even force, enhancing work and ensuring professional sharpening even on the first try. 3. Highquality materials: This grinding aid knife has a simple design and requires no experience. The knife sharpening aid set is made of solid plastic and ceramic, robust and reliable; small and easy to carry; with a smooth surface, not easily deformed or broken, and can be used for a long time. 4. Applicable places: This 15degree grinding aid can firmly fix the knives and hold them at a certain angle, suitable for most knives, such as fruit knives, kitchen knives, industrial knives, etc., suitable for home, office, restaurant, market, shop.