This a DCT with a difference, it has a glass inner tank surrounded my a metal shroud, plus both ends are also metal.
The Glass tank is somewhat protected by the metal shroud, with 2 holes to view remaining e-Liquid levels.
This is a premium style of DCT tank with a very good quality of finish.
The bottom end cap has a recess to accept the flanged SMOK cartos, but will accept most 510 pre-holed cartos (45mm or greater) designed for DCT use.
You will need a 510 style tip to use this tank (along with the correct cartomizers - see to the right).
Warranty: DOA only for the Pyrex glass tank (ie: damaged during shipping) + 90 days for manufacturing defects only.
NB: Although the warranty conditions may make it seem this tank is fragile, we would suggest that being made from Pyrex type glass + the actual wall thickness, that these are reasonably robust and should survive minor issues. But do avoid dropping or knocking over to be sure.