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 design: The knife grinding aid helps you maintain a consistent angle when sharpening the knife and apply a reliable and even force, enhancing efficiency and ensuring professional sharpening results even on the first try. 3. High-quality materials: This grinding aid has a simple design and requires no prior experience. The knife sharpening aid set is made of solid plastic and ceramic, offering durability and reliability; compact and easy to carry; with a smooth surface, resistant to deformation and breakage, and built for long-term use. 4. Applicable places: This 15-degree grinding aid can firmly secure knives and hold them at a consistent angle, suitable for most knives, such as fruit knives, kitchen knives, and industrial knives; ideal for use at home, in offices, restaurants, markets, and shops.