Amazon.com: Rockler Router Guide Bushing Kit (11 Pieces) - Bush Router Guide Works w/Template, Pattern, or Jig - Router Template Fits Any Base w/a 1-1/4" Diameter Center Hole - Guide Set Includes
Using Guide Bushings on a Router | WoodWorkers Guild of America
Rockler Guide Bushing Router Plate - Router Plate Features 1-1/4” Center Opening to Accept Guide Bushings – Solid Plastic Router Guide Plate - Router Table Insert Plate Includes Mounting Hardware - Power Router Accessories - Amazon.com