The Pyrex glass is designed especially for the SMOK TFV12 Prince sub-ohm tank and is made of durable pyrex glass. It can hold the 8ml of e-liquid.
> Smok TFV12 Sub Ohm Tank
> Remove the upper part of the tank by moving it counterclockwise.
> Then, remove the older glass and fix the new one.
> Now fix the preferred coil on the top of the tank base & fix the upper part of the tank back firmly.
> Now remove the mouthpiece, move the top to one side, inject e-liquid, & fix back the mouthpiece.
> Turn on the device, adjust settings and enjoy vaping!