It's a coated insert to safeguard versus shorts just in case you had damage on your battery wrap, but you should ALWAYS inspect your batteries just before using and make sure the wrap isn’t weakened. If it is you need to rewrap it, Video It's possible you'll notice that “real” https://juulpodsforsale82501.answerblogs.com/35211783/the-2-minute-rule-for-buy-space-vape-online