[jw2170]

Hi Alan, I agree with John.
Most bushing inlay kits (such as the example below) will fit any router base plate with the standard hole in the base...

It is very easy to make a base plate, if you cannot buy one.

POWERTEC 71333 Router Bits Solid Brass Inlay Kit | for 1/4 Templates for High RPM Routing | Includes 1/8 Carbide Router Bit/Cutter + 1/4 Shank, Universal Bushing, Retainer Nut, Collar, Alignment Pin : Amazon.com.au: Home Improvement

POWERTEC 71333 Router Bits Solid Brass Inlay Kit | for 1/4 Templates for High RPM Routing | Includes 1/8 Carbide Router Bit/Cutter + 1/4 Shank, Universal Bushing, Retainer Nut, Collar, Alignment Pin : Amazon.com.au: Home Improvement

www.amazon.com.au