DELUXE ROUTER BASE PLATE By Peachtree Woodworking - PW1075 Large 9" x 12" x 3/8" (1/4" lip) design accommodates heavy routers. Snap out rings allow for openings of 3-1/8", 2-5/8" and 1-1/4" Includes a shoulder pin for freehand work and magnets to hold the insert into your router table. Allen wrench inserts in each corner to help level & adjust the router insert with your table