Vari-Flow Cartridges: 510 thread, Ceramic Cell, Variable Air Flow | 3 Colors

starting at: $11.45

(5 customer reviews)


You have found the most customizable cartridge available on the market and when you fill it up and dial in your voltage with one of our vape pen batteries you are going to be blown away by the quality.  The Vari-Flow features a variable air flow valve that will allow you to dial in how big of a puff you are looking to take.  We paired that with our award-winning ceramic cell heating element, wickless and clean, as well as a much thicker glass casing.

That means higher quality that you can feel and a better puff that you will experience immediately.

Choose Slim Carts for use with:

  • Flip Vape Pens
  • 3.7 Volt button or buttonless
  • Vari-Vape
  • Vari-Vape XL

Filling cartridges like this is easy as well.  This simple screw on mouthpiece covers a large hole that makes filling with an applicator or a cartridge filling machine a breeze.

*Chrome is available with a locking cap that stays closed once it’s screwed on the first time, as a safety mechanism, or a non-locking cap that can be refilled.  The gold version is available only in non-locking cap currently. 

**Not recommended for lower voltage batteries. 


  • 510 Thread
  • Available with locking cap on non-locking cap (Locking cap is a child proof, single fill and cannot be opened)
  • .5ml capacity or 1 ml in chrome
  • Ceramic cell heating element
  • Air flow control valve
  • Best for Medium to thick thicker oil
  • Wholesale volume pricing available here

Additional information

Number of Cartridges

1, 2, 5, 10


Chrome, Rose Gold, Wood Tip

Slim or Wide

Slim, Wide

Cartridge Size

.5 ml, 1 ml

Locking Cap (single fill, child proof)

No, Yes

5 reviews for Vari-Flow Cartridges: 510 thread, Ceramic Cell, Variable Air Flow | 3 Colors

  1. Charles R. (verified owner)

    I’m very happy with these carts so far. I live in vegas and have tried most of the different styles of carts they sell in the shops from rove style to bk style to cheap generic ones with plastic tips that fall off. No matter the case i always felt like they were a strain on my lungs and I always had to sacrifice on taking a big hit and breathing heavy afterwards. That’s how this cart feels wth the sliding door closed all the way. But open it even a little and your lungs are greeted with relief. Open it all the way and now you have Beautiful air flow. As a reference I’m smoking thin oil that flows easily in one and thick oil in the other that takes a long time to move even a little and both are hitting excellent. Be aware the mouth piece is very heavy and substantial, feels very high quality. Heavy as in if you unscrewed it and winged it at someones head it would hurt really bad. Also take note that it’s wider than any cart I’ve ever tried. As a reference It didn’t fit my mig vapor ovp 510 drop in style battery but no biggie, it works with my twist pen all day.

  2. mbwalker181 (verified owner)

    These carts are the best. Hard to use anything else now. Only issue is, I wish they came in 1ml as well.

    • O2VAPE

      Thanks so much !

    • O2VAPE

      We have them available in 1ml as of today 1-25-19. Thanks for the feedback, please know that we hear you and aim to please 🙂

  3. Jeremy R L. (verified owner)

    Best tank I could find not China trash. Best air flow I have had out of any tank I have had. Try it u will be glad u did. 15% terp and u are good to go.

  4. Mike M. (verified owner)


  5. A S B (verified owner)

    Excellent – best cart ever – the only cart to invest in

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