Woodpeckers Mortise Base uses the guide rod attachment points of your plunge router to mount a fully adjustable fence on both sides of your material. You have pinpoint control of the drag on your material and the position of the mortise in the stock thickness. With 4 different sizes of stainless steel guide rods, one size is almost sure to fit your router. Many routers come with an edge guide that mounts to the guide rods, but when mortising on a narrow edge, one shallow fence isn’t enough. Woodpeckers Mortise Base uses 2 fences, both a full 2” wide to give you the support you need for flawless mortising. What’s more, your mortise can be any length you want, as deep as your router bit will reach and the width of any router bit made.