[DaninVan]

Unless I'm way out of touch, that's a 'shaper' not a router. Same general purpose but different.
Shaper cutters are readily available!
https://www.amazon.com/Shaper-Cutters/s?k=Shaper+Cutters&rh=p_n_feature_seven_browse-bin:3071285011

 

[DaninVan]

Out of curiosity, GB, what is the diameter of the arbor? What is the threading on it? Imperial obviously but Right hand, Left hand?
One could hope that it's a standard size, but even then you might be able to get an adapter for a different bore if it's not.

* upon checking, 3/4" seems to be the norm for shaft size.

 

[DaninVan]

Oh! And I should have mentioned earlier, shapers have a reputation for hurting folks that don't follow strict guidelines re safety!!!
Do some reading on shaper use, please...we hate the sight of blood and body parts.