Is this that thing you've been looking for? The Stundenglass Large Upstem is one of two diffuser downstems that are situated inside each of the globes on the Stundenglass Gravity Pipe. As you rotate the bong on its axis, the Upstems filter your smoke through water and are imperative to the functionality of the gravity bong. If you're dealing with a broken Large Upstem, or just want some fresh replacements, this is the accessory for you. This Large Replacement Upstem works with the traditional Stundenglass Gravity Pipe while the Small Upstem sold here is designed for use with the Small Globes Kit, or smaller Stundenglass Kompact Gravity Pipe.
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Stündenglass Large Replacement Upstem
Fits the Stundenglass Gravity Pipe
Aircraft Grade Aluminum
Easy to Install & Use
Patented Design