ok so i have been vapping off and on for 3 yaers trying to quit ciggs started off with the npro from njoy worked for like a week then ust stoped tryed bolling blowing urn cleanr no good so moved on to the njoy ciggare waste of money then got smart went 510 from esmokeytreats loved it flooded a few attys .... all in all good let my sister inlaw try it and it has not returned so desidid to try the vaporking from v4l found what i have been looking for took a lot of time and a tun of cash .... this thing rocks grate flavor hit to make ya cry and fabulous customer services so now im at attempt number 99 to stop smoking been 5 days