Recently I have been reading through published corporate histories of such iconic consumer companies as Kimberly Clark, Procter & Gamble, and Philip Morris
If you plug the enclosed 5.5 x 2.5mm male to 5.5 x 2.1mm female barrel connector male end to the cigarette adapter 5.5 x 2.5 female jack, then you actually convert the cigarette adapter the 5.5 x 2.5mm female connector to a 5.5 x 2.1mm female connector
[11] In addition, Massachusetts Youth Risk Behavior Survey data indicated that use of cigars among high schoolers across the state dropped from 14.3% in 2011 to 6.7% in 2017
In particular, support came from smokers who stated that they were considering a quit attempt, and young smokers (although the evidence for these findings is less strong, due to the small number of people in that group)
, cited in American Journal of Respiratory and Critical Care Medicine
Measurements (approx)