Vape Pen Cartridge Saver Cap for eGo, Vision, and other 510 / 601

Tired of breaking your cartridges in your pocket or backpack due to the length of your pen (giggidy)? Here is my solution. These caps screw on securely over the cartridge using the 510 or 601 outer threading.

Fit up to 11mm diameter and 72.5mm long cartridges
14mm diameter for Ego size batteries and clones including c-twist etc.
16.5mm diameter for Vision Spinner size batteries and clones.
16.5mm new version with a tad larger 11.5mm ID.

Warm it up and screw it on to tap in the threads