𝐏𝐄𝐑𝐅𝐄𝐂𝐓 𝐅𝐈𝐓: The router base plate has a 1 3/16 central hole with pre-driled holes for easy mounting. The adapter can fit most template guides with standard routers allong side with Port Cable 𝐂𝐎𝐌𝐏𝐀𝐓𝐈𝐁𝐈𝐋𝐈𝐓𝐘: The router adapter can fit with 50 different branded routers like Bosch, Craftsman, Dewalt, Makita, Milwaukee, and more. This allows the adapter to be easily used with multiple machines 𝐔𝐒𝐀𝐁𝐈𝐋𝐈𝐓𝐘: The adapter base plate for routers allow you to easily use Porter Cable style guide bushings and other common diameter guide bushings. This allows you to choose the prefect guide for you 𝐕𝐄𝐑𝐒𝐀𝐓𝐈𝐋𝐈𝐓𝐘: This 1/4" acrylic router adapter can easily fit both standard and compact routers without any sort of issues. This adapter helps ot increase precision to your existing router assembly 𝐈𝐍𝐂𝐋𝐔𝐃𝐄𝐃 𝐏𝐑𝐄𝐂𝐈𝐒𝐈𝐎𝐍 𝐆𝐔𝐈𝐃𝐄: The highly compatible adapter has an array of assorted screw sizes and precision centering pin. This centering pin allows you to perfectly align your router bit in the guide bushing