Owen, the Bosch quick change adapter is a pleasure to use; just a quick flip of the spring loaded lever and you pull your bushing or adapter and two piece bushing from the router. Bosch steel guide bushings are best used for rough construction. For other work I prefer using the adaptor with PC style guide bushings or an Oak Park 7" square base plate with the larger diameter Oak Park/Lee Valley style guide bushings.(This allows for more variations on bit/bushing ratios) Bosch service centers have both the adapters and steel bushings in stock. You can also buy at Amazon or for a more personal approach I like the friendly people at Marsh Power Tools. I recently bought the new MRC23evsk from them and they gave me the adaptor at no charge!