- Purpose and fit: This is a small router adapter with the left side designed to connect to the router (fits perfectly with the router) and the right side designed for the guide rail (perfect for the rail). - Easy installation: Uses the original screws from the factory base to mount the router adapter; no additional hardware required. - Build quality: High density material (not 3D printed); well made, with a smooth and flat surface; hard and resistant to damage; stable under cold conditions. - Precision and rail contact: The adapter can be cut precisely and straight, and the portion that contacts the rail is smooth and flat with no gaps, ensuring very smooth and stable sliding along the rail. - Applications and use scenarios: - Use for guided routing along a straight rail to achieve accurate, repeatable cuts. - Retrofit or upgrade a handheld router to work with a guide rail system in jigs or fixtures. - Integrate with existing rail-based setups for dadoes, grooves, or consistent edge routing in panels and projects.