To attach the Ooze Connectar to a vape pen battery, you first need to separate the three pieces of the device. Then, screw the airflow base directly onto the battery, just as you would an oil cartridge. Next, slide the straw mouthpiece over the top of the base and push it all the way down into place. Finally, screw the Clapton coil tip on top and you're ready to use the Connectar.