I go look Hmmm
It's an 801 connection and a 510 body--so it fits a lot of places an 801 won't--but it won't work on a 510 mod without an adapter.
I've never used an 801 carto before so I don't know if it's just "plain jane" 801 internals, but this thing puts out flavour like an 801, produces vapour (at 3.7 volts) like a DCC or Resurrector at 6v and generates no warmth or throat hit (that I can tell, but throat hit doesn't seem to work the same for me as everyone else). It's amazing, but if you want warmth or throat hit it's probably not for you