but that's the nature of all 9mm borosilicate tubing

8mm female joint and comes with a removable 18

The Grav STAX Angled Mouthpiece is crafted from high-quality scientific glass tubing

This Pulsar sifter box with a rolling tray makes it easy to store all your stash for quick access

The taster is completed with the recognizable Grav decal

Tank Glass "The Original" Tank Beaker - 12 inch Domed Showerhead Perc but that's the nature ofTank Glass is very appropriately named. They don't claim their pieces are unbreakable but go ahead and try. The 12 inch tall , 9mm thick American blown glass can withstand so much, you won't believe it's glass at all. If you're looking for a piece that's as tough as you are, you've found it. It's a bong so durable and so functional, it will quickly become your most reliable piece of choice for years. The reinforced beaker base is fixed to a super