Vaping, Electronic cigarettes

also copped this

http://www.vapegear.co.uk/product/airflow

Only £2.99 - seems worth it from the reviews:

Excellent piece of kit. - Linda - 03/06/2014
Also compatible with the Protank I.No more blocked airflow, can tighten the protank down all the way to stop it wobbling, without affecting the airflow.No more liquid leaking onto the battery connector.Nice loose draw when fully open, but easily adjusted for any type of draw.A must have for protank users.Great service, fast delivery, great price.
5 product stars
Essential - Michael - 03/04/2014
If you use a protank at all then get this. Not only solve air flow problems when using some mods, but gives another level of customisation to acchive that perfect vape.
5 product stars
Must buy - Daniel gill - 03/04/2014
If you have a protank 2 or 3 this is a must buy! Airflow improved for the perfect vape. Great price and fast delivery!