1. Stable double bearing design: The 4PCS flush trim bit set is equipped with professional double bearings to ensure precise and stable trimming and cutting. This design provides superior accuracy and makes it ideal for home and professional woodworking projects. 2. Highquality wear resistance: This bit with a premium alloy head exceptional wear and cutting performance. Whether you are working with softwood or hardwood, it maintains its sharpness for longer periods of time. 3. Versatile use in woodworking: The 6 mm shank double router is suitable for a variety of woodworking applications. This bit is designed for effortlessly handling various wood tasks, making it an essential tool for carpenters. 4. Practical 4PCS set: This package includes four highquality flush trim bits, providing you with additional replacements to ensure you are always ready for any woodworking task. With an adequate number of bits, you can switch out worn bits for fresh ones to maximize your productivity and minimize downtime.