Slightly too small
I got these as replacement screens for my Arizer Extreme Q.<br /><br />They're slightly smaller in diamater than other brands of these available on Amazon. I've tried three brands at this point, looking for a bargain, and these are the worst once I've found.<br /><br />While others fit snugly inside the stem adapter, the slightly size difference on these often causes them to fall out of the adapter and into the cyclone bowl. This results in bad airflow, reduced vapor production, and worst of all, inconvenience.<br /><br />Go with a different brand if you're using it for a vaporizer.
Rating: 2 stars