BrewHardware.com has some really unique gear (at generally great prices), including a selection of fittings disconnects, site glasses, brew kettle upgrades and a lot more.
They have this 1/2″ NPT .5 micron diffusion stone on sale for $19.99. It’s designed to be installed inline with something like a 1/2″ NPT Tee Fitting.
STAINLESS OXYGEN (O2) .5 MICRON DIFFUSION STONE WITH 1/2″ NPT THREADS – $19.99 (Save $5)
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