1. Durable Material: The router table insert plate is made of heavyduty metal, ensuring use without rust or deformation. It is strong, wearresistant, and impactresistant, remaining undamaged even after extended periods of use. 2. Save Time and Effort: The router insert plate kit includes 4 different router insert rings and screws to accommodate various needs and tasks. It enhances efficiency, simplifies operation, and saves both time and effort. 3. Fit: The bit is set at 0, and the board features measurements in both inches and centimeters. This metal router mounting plate is compatible with most routers. The two different red caps on our aluminum router plate insert are designed to fit different drill bit diameters. 4. Versatile Use: Whether you're a professional woodworker or a DIY enthusiast, this router table mounting plate is an assistant for your projects. It includes 4 router insert rings, aluminum router table inserts, and 15 screws.