The Woodpeckers Coping Sled is the router table accessory you need to make rail & doors, tenons, lap joints, and most other end-grain cuts. The Woodpeckers Coping Sled uses two techniques to secure your work piece. First, it traps the board between the adjustable top plate and the fence. The slotted top plate is easily adjusted for material up to 5-1/2-inches wide.
This is in pristine condition. I'm not sure if I ever even used it.