It is but Dan was going to put it in since it shipped much later than the others, I still haven't checked the accessories to see if it was included in a care package kit.
Anyway now that I see how deep the stem goes in I'm not so sure it is necessary, I feel it is still a bit more secure with the two screen method even though it is a bit more involved...
To me this is fully unique and also not needing of all these extras now that I have it in hand imo. the only reason would be if it was someone's only vape and I know that's not the case for any of you
Anyway I've only had a few bowls with what I thought was the low heater, but I'm not so sure since the bowls don't last very long and do get some center char... They are small loads though and I have not been able to stir with two screen method, just a puff fluff