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3. Brass knuckles cartridge – Some of the strongest prefilled carts but with quality control issues.

Brass Knuckles cartridges were founded in Los Angeles, California. Its carts are packed with some of the most potent CO2 extracted cannabis oil available going as high as 90% with their forbidden fruit strain. Now it’s important to mention that this company has had trouble failing lab test for clean THC oil. However, after that mishap they have been improving their efforts to make sure they’re lab test results are frequently showing their CO2 oil is clean. Their website has links to their lab test and it’s also available at

Their company is founded by an American rapper known as Xzibit along with other partners. Their ambition is to create a CO2 prefilled cartridge that is a thousand times better than the rest. They recently released a new reverse flow cartridge that looked very promising. However, it wasn’t meet with good feedback. They had a lot of comments from their users demanding they bring back the old cartridge on their Instagram page. The new reverse flow cartridge didn’t last long after the bad feedback on Instagram and was canceled shortly after.

Brass knuckles cartridges are started the new year with a new and improved super premium CO2 oil that looks significantly clearer than it did previously. They released their new cartridges as the California edition. The differences are noticeable when you vape the new cartridges, the cannabis oil has superior flavor and tastes clean. The official website of Brass knuckles is The official Instagram of Brass knuckles cartridges can be found at

2. Amber industries cartridges – One of the best prefilled cartridges with fractional distilled cannabis oil.

Amber industries may not be well known on, but if you’re lucky enough to have access to them you’re in for a treat. These are some of the best prefilled cartridges, they’re incredibly strong testing between 80-90% THC. It doesn’t require too much vaping before you can find yourself heavily medicated. The reason behind the potency is because waxes, shatters, and cannabis oil is refined into a purer form of THC using chemistry. The result is a more potent end product up to 96% THC.

While the THC oil in these prefilled cartridges may be great, there lies an issue with the cartridge not being able to vape the entire fractional distilled cannabis oil. A small layer of hash oil is always wasted which happened to over 5 of these carts I tried from this company. Other than these drawbacks the cartridge design itself has some tremendous vaping ability that makes it easy to vape huge clouds. The oil is a bit thicker than Brass knuckles cartridges, Heavy Hitters vape carts, and 710 king pen. Extracted cannabis oil without any fillers is thicker than hash oil with fillers added.

I have not seen any one gram versions of these THC CO2 cartridges. Only half grams are available for $30.00 in the bay area. I’ve only managed to find these available on the offerup app. The official website for additional information about Amber industries is at, what I found odd is both the links to their Facebook and Instagram lead to deleted accounts.

1. Stiiizy – The best prefilled cartridge in 2018

Our winner for the best prefilled THC cartridge in 2018 is the Stiiizy vape pen, leak-proof pods are filled with cannabis extracted oil that isn’t cut with any fillers and tested with a minimum of 85% THC. Dual airflow tunnels on the mouthpiece of the pod are great for vaping huge size clouds. The cartridge is leak and burn proof making it one of the most durable prefilled cartridges on the market. I also dropped this cartridge more than few times without any problems that I would have had with a glass prefilled cart.

Stiiizy has an automatic puff activation capability that makes vaping more of a pleasant experience, it’s much more enjoyable than other vape pens that require a button to be pressed when vaping. Stiiizy pods are easy to slide onto its battery and pop out, a feature much more efficient than the standard 510 thread screw on carts. Stiiizy cartridges are secured by magnets which is the reason why it’s so fast to remove and add one of their disposable prefilled cartridges.

Stiiizy has some powerful THC oil cartridges tested at a minimum of 85% percent. After trying Stiiizy, I didn’t want to go back to my formal favorite for a long time, Brass Knuckles cartridges. I tried the Stiiizy strain Grand Daddy Purple and it tasted a lot like a grape jolly rancher. These pod cartridges make it easy to vape huge clouds that are very smooth because of its dual airflow mouthpiece and ceramic coil.

This company has introduced a lot of innovation creating their vape pen and prefilled THC oil cartridges, it’s easy to see they really cared about making a product that will provide a better vaping experience than what’s on the market. They solved a lot of problems other prefilled cartridges currently are struggling with. Thanks to companies such as this one, prefilled wax cartridges have come a long way. Their official website can be found at

In conclusion, the legalization of recreational cannabis usage occurring in many states has introduced a lot of innovation for vape pen cartridges for sale in these states. Those who want to vape hash oil in a legalized state can now do so if they are 21 years of age and they will have many options to choose from. A lot of people have made the transition from smoking cannabis to its more potent concentrated form known as hash, thus making the popularity of vaping increase exponentially. We have a guide with additional information for those who are new to vape pens. We were not given any of these products, we purchased each product with our own money to elevate them for you, our readers, so that you can make the most educated purchase on your next prefilled cartridge purchase.

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