Welcome to our store! Here is the information about the product you are interested in: - This set includes 5 rotary files with different designs, allowing you to meet various grinding needs. - These files have higher efficiency, with processing efficiency several times higher than ordinary files. - They provide a safer and more comfortable working condition with less dust. - These files can be used for grinding non-metal, soft metal, and other materials. - They are made of high-quality high-speed steel, making them difficult to deform and very durable for long-term use. Product Information: - Item Type: Rotary File - Product Material: High-speed steel - Surface Treatment: Chrome plating - Shank Diameter: 1/4 inch hex handle - Length: Approx. 68 mm / 2.7 inches - Diameter: Approx. 13 mm / 0.5 inches Package Includes: - 5 x Rotary File - 1 x Base 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.