We present to you the v4.1, basically same as the v4 but as you know we always strive to improve our products and with this one we have made a small chance compared to the v4. 

We added a little extra distance between the joint and the base to help you prevent any unintentional heat on your piece. 

As usual, it’s made for us and is nothing you will find somewhere else then by us or our authorised retailers.