The Dust Right® Click-Connect Router Dust Port surrounds the router bit to dramatically improve dust collection from above the workpiece. It includes a plate that attaches to most midsize routers, and a clever rotational adjustment system that allows the shroud to move up and down, ensuring that the bit is completely enclosed. Clear acrylic baseplate is included to ensure the best possible visibility. Find this product in Rockler stores or at Rockler.com https://www.rockler.com/dust-right-click-