The guide comes with two sets of rods to accommodate various DeWalt routers' rod spacings and rod diameters. The thicker rods could not insert into the guide. Obviously this was not checked at the factory. The brass screws that hold the rods in the guide would not retract enough to give clearance for the rods. Rendering the guide useless. Quality Control in china is understood by Chinese workers as the perfect state in which the product is off their work station. This is according to my brother-in-law who worked in China for Microsoft builds.