
Heisenberg Showerhead Diffuser Precooler
Heisenberg Showerhead Diffuser Precooler
This clear glass precooler by Heisenberg is equipped with an 18.8mm male joint that connects with any bong that is equipped with an 18.8mm ground joint. The precooler features a 29.2mm ground joint on the top and comes delivered complete with a removable 29.2mm > 18.8mm showerhead diffuser downstem. The precooler does a great job of keeping unwanted ash and debris from traveling into your bong and also adds important cooling and filtration to your bong set-up.
The bubbly smoke is separated and cooled as its pulled through the submerged slits in the showerhead diffuser all before the smoke reaches your bong. This results in a smoother hit thats still packed full of flavor but less harsh on the throat and lungs. This solid diffuser precooler is constructed from heat resistant borosilicate glass and has a reinforced joint for added strength. The piece is decorated with Heisenberg decal on the downstem and Heisenberg decal on the body.
This affordable precooler from Heisenberg adds important cooling and filtration to any compatible bong set-up and will last for years if looked after and maintained correctly. Check out our extensive range of precoolers, accessories and attachments available to order online today at the number one smoke shop GrasscityShop US.com.
📦 100% Plain & Discreet Packaging
100% plain and discreet packaging in unmarked cardboard boxes with neutral sender details. Zero mention of smoke or glass on the outside.
🚚 Dispatch & Delivery Timelines
Orders received on business days before 12:00 PM are queued for same-day packing. Domestic delivery typically arrives in 2–4 business days via USPS Priority Mail or UPS Ground.
🛡️ 30-Day Return Policy
30-day return policy for unused, unopened items in original packaging. Return shipping is covered by the customer unless damaged on arrival.
For borosilicate glass bongs and pipes, use 91%+ isopropyl alcohol combined with coarse sea salt as a gentle abrasive. Swirl gently for 2–3 minutes.
Rinse thoroughly with lukewarm water until completely odorless. Never shock hot glass with ice water to avoid thermal micro-cracking.
Soak smaller glass accessories in a sealable bag with alcohol and rinse weekly to maintain optimal percolation and clean airflow.



