Bringing the notorious HK mod style to our stackable tubes!
Stack these tubes on the bottom of your Comp Lyfe mod to vape in series configuration! A DoubleDouble Contact will be included with the tube to be used in-between your batteries during use. Screw your housing on last to complete your stacked set up!
When using a Double Double with a DDiesel, you will need to put the Double Double Contact on the top of your battery (under the 510). Lastly screw your housing on the tube to complete your DoubleDouble set up!
What's in the box: