it's a clear plastic ce2 cartomizer - tank with built in atty. They are nice and you can see your
juice. The steel ce2's are nice too, but you can't see what juice is left for
vaping. Due to the plastic tube cracking they will not last as long as the steel tube ce2's, I have some of the steel ones with a little cleaning lasting over three months, plastic maybe 2 to 3 weeks. Although I really like the clear ones, I won't be buying any more intill they improve the plastic.