18mm to 14mm Pipe/Bong adapter
thingiverse
Something I threw together out of necessity. Not a perfect fit right now but serves it's purpose. I'll likely fix it up a bit soon. It's meant to allow use of 14mm bowls with 18mm pipes. I also had a series of vaporizer tools and connectors I needed to connect and I had lost my glass adapter. The rim is to allow easy removal.
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