Must admit I've not looked for ages - some years ago I toyed with the idea of making a high-density outlet plate using those, and I bought a load of plugs on eBay, expecting to find sockets available.
If I can still find the plugs I might see if those sockets will do, but I note they say "inlet".
Or if I do ever bother, forget XLR and go with Neutrik's more modern alternative...
https://www.neutrik.com/en/products/power/powercon-20-a
doesnt look as nice as silver XLRs though