Replaced my standard router base with this D-handle for better control when routing dovetails using a dovetail jig. Just one thing to keep in mind is the cord on a standard base 690 is too long for use with this handle. There is no good way to manage the extra cord so I shortened my cord on the router and will use an extension cord if I need to use the fixed base again. It was easy to remove the cover on the router and shorten the cord or you could just cut the cord to length and add a new plug if you are nervous about getting inside the router.