Made for our original router plate (#31769), this optional blank center disk is ideal for creating custom size bit openings for zero clearance work. Just bore it out to the proper dimension on a drill press or, if the bit profile will allow, cut it to a perfect match by gradually raising the bit up through the disk while it's installed in (screwed into) the plate. Disk has a diameter of 3-7/8". USA
NOTE: This insert is only compatible with our #31769 Router Plate and is not compatible with our current #88941 Router Plate.