Big Horn 6-1/2 Inch Dia Mortise Center Router Base

Big Horn 14106 Mortise Center Router Base. Simply straddle the board between the pins and cut your mortise perfectly centered every time Plate is constructed of 1/4 In. Acrylic with 1-1/2 In. opening, & is transparent for visibility. Solid brass guides thread easily into 3 different insert settings for a variety of wood thicknesses and for non-centered mortises.