DCT Universal Router Table Saw Insert Base Plate Kit – 3-7/8” 2-5/8” 1-1/4” Inch - Walmart.com
Compact Router Insert Plate Kit for Convertible Benchtop Router Table | Rockler Woodworking and Hardware
JessEm 02120 Mast-R-Lift II Router Lift with Top Plate and 10-Piece Insert Ring Kit with Caddy for Router Plates and Lift Systems (2 Items) - - Amazon.com