Festool 498590 Domino Cross Stop is designed for precise and repeatable mortise placement between 3-7/8" and 8-1/16" (100mm and 205mm). This innovative tool enables accurate mortise spacing across the surface or edge of a workpiece, regardless of material length. By eliminating the need for witness or scribe marks, it significantly increases efficiency. The adjustable-spaced pins register against the starting edge of the material or the previous mortise, ensuring consistent and accurate spacing. It attaches quickly and easily without tools to the Festool DOMINO Joiner and replaces the earlier product 493488. With the ability to adjust in 1mm increments and index from opposite sides, it s alignment in edge gluing applications. Model Number: 498590