Quality of glass is very good but the down stem holes are so small that you really got to pull to get a good hit.

This bong is great!

Perfect size for the lone toker. Not a party pipe. I don't have the lung capacity to move enough air through a large water pipe to get effective hits. So, my dope just sits there and burns while I'm trying to inhale a volume approaching the Graf Zepplin. This pipe allows perfect hits. I like kief. This pipe (with a screen) is perfect for small kief bowls. Buy with confidence.