Perfect one hitter size for medium sized hits. Cleaning is easy with boiling water and 91% isopropyl alcohol. Great design and durable glass. 5/5 stars. Great piece.

Hello, I have been looking for a one hitter bowl since 2008. Finally, 420Science had them in Stock. The bowl is PERFECT. I was so happy, I ordered 8 of them to share with Friends. The customer service & communication is AWESOME. My bowls arrived early. I was continually posted on the status of my order. 420 Science is a great company. They are a TRUE model for ALL small businesses. Sincerely, a Very happy customer, Frank Gill

Probably .125" or so. I was hoping for .100 or .090". Just got it an hour ago and it works pretty good if you don't draw on it to hard. If you hit it hard unburnt flower will go through. But nice. I need to practice more. :)

Really this is like a 1.5/2 hit bowl, even on my largest bong. It's nice when you have the time and take the time to clean after each hit so you always have the nicest green hits, but I think due to the shape and that you are burning to completion with almost every hit it does resin up quickly. The little nubs are great to have a cool spot to grab and as always feels like some thick glass, dropped it a few times and so far has just bounced!