Should be used with Freud’s slotting cutter arbors 60-100 for 1/4″ shanks and 60-102 for These cutters are a fast, efficient way to rout slots and grooves for T-moldings, spline joints, tongue & groove joints and many other applications. Should be used with Freud’s slotting cutter arbors 60-100 for 1/4″ shanks, 60-102 for 1/2″ shanks, and 62-108 bearing.