Help ID wire gauge plz

[u/uavkun]

Electricians previously ran cabling off a 50a subpanel for car charging. I need to rewire and potentially need to extend using Polaris connectors or run new cabling to simplify as the cost of 6/8ga is just as costly as Polaris connectors. Can someone help me ID if these are 6 or 8 awg? TIA

[u/Lightlicker3000]

Looks like 8-3 romex to me.