Mj concentrates have good ones also Drugs Inc UK have 1ml carts. I have only tried MJ carts and after 2-3 puffs the high is intense the first 20mins then settles to a nice high for few hours,, hope this helps

They are beautiful, aren't they!

Mind blowing,,,,,

So do you just have to put the cart in a vape pen or something, and do they sell the vape machines?

At the base of the mouth piece on the cart you can turn to open up the air holes but i prefer keeping it shut,,,,,,

What's the difference between keeping it open or closed?

Yes they are standard size fit most vape pen you just screw it on to the vape battery or you can order the vape as well from MJc they do a deal on both vape and cart

I recommend the strawberry cheesecake blows your head off,,,,,

Any reccomendations on what vape i need to buy in order to use one of these vape carts???? Love the sound of these

MJ does a really nice discreet little vape on his page: The iMini. It's tiny, powerful, and blows sobriety from the mind in little under 30 seconds.

MJ Concentrates makes AWESOME vape carts with THC distillate. 90% THC with different terp profiles. Super strong.

How long does it last?

I'm quite a heavy user. My last cart (450mg) lasted 4 days. But I hit it hard over the weekend. You could definitely get longer out of it, though.

Last quite a while it's worth it

Yeah it is bro. Sorry for not responding sooner. It’s stronger than the 450mg carts. My mate’s have tried the cart and all struggled to function after liberal use LOL. Noobs