Vari-Flow Cartridges: Ceramic Cell, Variable Air Flow

starting at: $11.45

(34 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.

For use with any 510 Thread Vape Pen Battery with 3.7 Volts or higher, including these best selling vape pens:

*Will not work with lower voltage batteries, such as our Original Buttonless Battery.

** 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. 


  • 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
  • For Aromatherapy purposes only

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

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34 reviews for Vari-Flow Cartridges: Ceramic Cell, Variable Air Flow

  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

  6. Joseph L. (verified owner)

    Beast mode. Hands down the best cart I have ever used. I was annoyed at first, paying $12 for an empty cart, but WOW. These are so clean. The rectangular openings are huge and provide massive hits even with the thickest cbd/thc oil. Never have any run off and when they start to clog up I just open the valve a bit more and it hits huge again. Would absolutely recommend.

    • O2VAPE

      Thanks Joseph!

  7. Victoria S. (verified owner)

    I absolutely love these cartridges. They are clean, solid, reusable 3 or 4 times pending oil type but have put a few through from thin to dab thick and haven’t been let down yet.
    Highly Recommend!

  8. nevadawx

    The Best! These can be cleaned and reused. Definitely worth the price. Easy draw. Solidly made. My cartridge of choice. Get the slim ones if you are going to use a palm battery. I’ve got two cartridges that are on refill #5 and they are working like new. Keep ’em clean and they really really last. If you are mixing your own juice use Crumble and not Shatter. Crumble cleans easier and is less ‘sticky’.

  9. Lisa (verified owner)

    These are amazing! I have health problems with seizures. The cartridges increase the airflow and that eases my seizures. Can’t live without it now!!!

  10. Patricia L. (verified owner)

    I received the cartridge in a timely manner and I am very happy with the product. It’s well made and helps deliver the pain relief I need.

    • O2VAPE

      Thank you Patricia! Glad you like it 🙂

  11. Gerry (verified owner)

    Works great! Very pleased with my purchase.

    • O2VAPE

      Thanks Gerry!

  12. Joshua M. (verified owner)

    I used to buy dirt cheap carts but got tired of no air flow and leaky seals. Never again. I was skeptical about the price… I paid almost 30 dollars (with shipping) for 2 carts. I could get over 15 of my old carts for that price, but you get what you pay for… These refillable carts are hands down the best I have ever used.
    The seals are way thicker and seat perfectly. The air flow is amazing!! I can actually draw on my thicker mixes and nothing burns or gets too hot. The wickless ceramic design is hassle free. I have yet to refill them but I am confident that they will last beyond the recommended number of refills. If you are on the fence about this product because of price or quality concerns just order it. You won’t be disappointed.

  13. Josh S. (verified owner)

    I have been buying Airis refillable carts, but I always had these in the back of my mind (I saw them doing some early research). I finally bought 2x 1 ml slim tips, and they are a dream. No more clogs and great taste from the ceramic plate. Even vaping incredible thick oil there’s no problems.

    • O2VAPE

      Thanks Josh! so glad you like them 🙂

  14. Frank H. (verified owner)

    HELL YEA!! This 510 slim atomizer is RIDICULOUS how much air flow is in the wide bore tip.The COMFORTABILITY is ABSOLUTELY PERFECT ..DEF MY GO TO OIL ATOMIZER FOR THICKER JUICES,OILS,LIQUIDS…If you HAVEN’T TRIED OR OWN ONE OF THESE, While you’re reading this GO DIRECTLY TO THE O2VPAE STORE and get 1 or 2 .

    • O2VAPE

      Wow! Thanks so much so happy you like it ! 🙂

  15. Nathan (verified owner)

    These cartridges will give you a new vaping experience! The taste is clean, gives you an enhanced flavor out of your oils you’ve never tasted before and the pulls are nice and smooth. Highly recommended, I will be refilling my oil with these carts and nothing else. Also a HUGE SHOUT-OUT to the O2VAPE customer service team! Always there to help and provides great customer service.

    • O2VAPE

      Nice! Thanks so much Nathan!!

  16. Geo (verified owner)

    I bought 2 and they’re the best quality and simplest cartridges I have ever used.

  17. Geo (verified owner)

    I bought 2, and they’re the best quality and simplest cartridges I have ever used. I will be shopping on O2Vape in the future. I have recommended this to several people, and they already see themselves buying more.

    • O2VAPE

      Thanks so much GEO! VAPE ON!

  18. Seth (verified owner)

    Superb best flavor doesn’t leak couldn’t possibly be happier

    • O2VAPE

      Thanks !

  19. James (verified owner)

    Works great! Very satisfied!

  20. Alex

    Phenomenal! I’ll probably always keep a couple of these around for my personal head stash. Works better than I could have hoped, although for the price it had better work flawlessly.

    • O2VAPE

      Thanks Alex!

  21. Duane W. M.

    I bought the FLIP ULTRA a few weeks ago, and it is the BOMB! Fast shipping and great service! Only issue I have with it is that it flips out so fast and hard I am thinking that the screw attachment area for the cartridge may be compromised since its the weakest area of the harsh flip is in the vaping position attachment area. Time will tell I guess. I am in need of some refillable cartridges beyond the one .5 empty that came with the FLIP ULTRA now. I have vaped about 3 1 gram carts through it, and VERY VERY IMPRESSED!!!! I now want to make my own THC vape juice and want to get a few of the 1 gram cartridges, but its soooooo hard pulling the trigger on 5 of these 1 gram cartridges at the price! But as others have stated….you get what you pay for. So I guess I will save up to purchase 5 of these beast cartridges so I can start my own filling of cartridges and get the smooth clean hits everyone is talking about.

    • Dana E. Shoched

      Wow! Thanks Duane! you need not worry the flip mechanism is fine 🙂 and if something does happen yo are covered by our warranty process : VAPE ON!!

  22. Theresa N. (verified owner)

    Much better than the prefilled cartridges from the dispensary. I use it every day.

  23. Mike (verified owner)

    Very happy with the build quality of these cartridges. I recommend to anyone who is tired of the issues with pre filled cartridges. 😀

  24. James D. (verified owner)

    Hands down the BEST cartridge out there. This has thought and money put into it and it shows. Price is higher then most but it’s the only cartridge I will ever use again. Adjustable airflow is amazing and it doesn’t require you to get your air flow from the thread so you can actually screw your cart all the way down.I just ordered 5 more. Get one and you will do the same. I promise. Works great with Wax Liquidizer Solutions!

    • Dana E. Shoched

      Hi James ! Thank you ! You should try the all glass carts as well 🙂 VAPE ON!

  25. Michael (verified owner)

    This tank is awesome and very useful. I forgot what adjust air flow helped that smooth draw…I just had to leave a 3 star review on another vape product this is a must.

    • Dana E. Shoched

      Thank you Michael! We love them as well!

  26. Jeff B. (verified owner)

    Most definitely best cart I’ve tried. Little to no learning how to use, as compared to others. Will most definitely be placing another order.
    Keep On Tokin!

    • Dana E. Shoched

      Thanks Jeff and I will ! VAPE ON!

  27. Glen (verified owner)

    So far the cartridge is working perfect. You open the window and hits are not quite so robust but still easy to pull on. This is far better than any other 510 cartridge I have ever used, if someone knows of a better plase let me know

  28. Ted (verified owner)

    Vari flow ceramic 1ml cartridge
    These are amazing high quality, performance! Superior to any other brands out there!!

  29. Jay Z. (verified owner)

    I bought the .5ml cartridge and am impressed at the quality of the build and the materials used. I liked it so much that I ordered 6 of the new larger 1ml cartridge. However I was surprised to find out that the larger cartridge doesn’t have the o2 vape logo on it. That is disappointing because the logo definitely adds an extra touch of class to the overall look.

    • Dana E. Shoched

      Hey Jay, Thanks for the nice words and yes they do so it may have been a mistake on the unbranded ones, we sell those wholesale so maybe just a wrong grab and pack. Sorry about that 🙂

  30. Rickmo (verified owner)

    Arrived on time and perform as advertised,everyone has commented on their quality

  31. William (verified owner)

    Absolutely love the veri-flow adjustable air flow. Heavy-duty and good for reuse as advertised. Your able to get better taste of your product with the ceramic cell. Thank you for a great product

    • Dana E. Shoched

      You are welcome and THANK YOU!

  32. corina1164 (verified owner)

    My type of business

  33. Dave (verified owner)

    Been using 3 for a year now and very happy cheep import ones had me wondering what they were made of…. I feel safer using these ( I ordered 3 ) for starts and breathing better after a year just ordered 4 more. Pricey BUT well worth knowing they are safer than sucking up who knows what.
    Just read the reviews.

  34. Mona Lisa Loves Mary Jane

    These are very high quality carts to fill over and over again. I absolutely love them. I fill them up with matter that is in a syringe. SUPER SIMPLE. I got wider one if there was a choice. Phenomenal company. Fast shipping. High quality!!!

    • Dana E. Shoched

      Wow ! Thank you so much and welcome to the O2 family 🙂