how specific must rocker switch specs be?
Here is a switch that should do the trick for you. It is rated at 22A/250V. Mounting hole size looks to be the same as the Aliexpress item that you linked.



https://www.ebay.com/itm/AC-20A-125V-22A-250V-DPDT-6-Terminal-2-Position-Boat-Rocker-Switch/272975729244?hash=item3f8e9f125c:g:XFsAAOSwnPla8b-Z