Unique, patented cutting action that rotates and oscillates to create perfect, clean, and repeatable mortises every time * Mortise width adjustment with the turn of a dial allows for easier alignment when joining panels * Indexing pins for quick alignment against the edge of the work piece for accurate placement * Tenons up to approximately 5-1/2-Inch in length for large scale projects * Includes optional trim and cross stops for narrow stock and edge joining