Ok...here's the skinny on these things. The disposable pens are more or less history. There were filled once and thrown out. They were crap......many failures and the customer couldn't get the oil out....not good and I stopped those. They were good though if you were going somewhere where it may be confiscated or a concert type thing. If the heat get hot...toss it. So they still have some place. JuJu joint was common one and still is.
Then.....................
The trend at the same time was too get a refillable vape pen for concentrates. Some are good..some are shit. I have a earlier Puffco and it works quite well. But yes it needs cleaned. GB is correct, you can load shatter, butter, oil, wax or any other meltable concentrate in those. Cleaning in hot boiling alcohol works good for my puffco. Clean as new..almost.
But now we have these disposable cartridge rechargeable pens.
THEY ARE THE BOMB.
You keep the battery and replace the cart.
Sorry Dan but they do not refill well. Your lucky to get two goes from it. They are designed as throwaways. And for good reason. They don't refill well. Not with pure concentrates anyway.
Possibly if your mix that crap flavoring in you might. But I can't say as I don't do that.
They are junk after the first use basically. We tried...IT DOESN'T WORK. NOT WELL ANYWAY. Your just making life tougher if you try to reuse them...sorry...but that;s the deal. Like it or not...they are disposable.
This is good.
Because the new one will work wicked good......do enjoy it.