Nice soft smooth pencil.
Very black for a 7B. I know Mars Lumo has a set of carbon pencils which I also have so wasn't expecting the change from 6B which is a normal graphite pencil to the carbon that is in the 7B. Still a good pencil to draw with. It just depends on what sort of finish you want. Matt or shiny. The carbon pencils are more matt and don't have so much of a glare if you need to photograph or film your work.
Clear soft lines easy to run off.