They have the same basic design, function and manufacturing tolerances. The Alignment Tool II includes an elastic shock cord with a cord lock, and has two slots cut into the substrate that hold the shock cord. They allow the tool to be temporarily secured to the scope turret so that it doesn’t fall off during the alignment process. The original Alignment Tool must be held in place on the turret with fingers when the rifle is being manipulated. Now the Alignment Tool II includes a bulldog clip for temporarily attaching the tool to paper targets.