1 word: Airflow. No other screen I've ever tried gives this good if airflow while still stopping so much ash from entering your piece. Truly awesome, and they fit pretty low so you can still pack your bowls to the brim!
Just sets on top of the hole
Doesn't really fit. It just sits there . There is no "nub" or arm to hold the screen in place. Slides around in the bowl.
Hey Kins, Thanks for taking the time to review this product! I'm so sorry you weren't completely satisfied with your glass screen. I do see how one with a 'nub' as you say, would maybe sit into place better! This is meant to be wider to cover a range of different sized bowls. I would check out the Smojo Permanent Smoking Screen. It's going to stay in place a lot better over the glass version. Let me know if you have any other questions or concerns. Best, Sarah Brown The 420 Science Help Desk
Most common need screens
It's good for some bowls. Other than that great air flow.just after few usages I recommend poke the holes with paper clip or toothpick for it can work brand new lol