DeWalt 'asianizes' yet another product.  As a somewhat advanced furniture maker this accessory will not hold up for me.  The dust collector nozzle has already broken albeit it does not affect the performance of the guide. Not near as robust as the guide that come with Bosch routers, but it won't fit the Dewalt 621 plunge router which is perhaps the best plunge router on the street. The guide looks like it was stamped out of a chinese license plate. The guide works for now,which is about all I can say.  If you want accuracy,durabiity,and value contact Pat Warner - google "routerman".