
Black Leaf 7mm Straight Bong | 40 cm
Black Leaf 7mm Straight Bong | 40 cm
This sturdy straight tubed bong by Black Leaf is made by using the finest 7mm thick, heat resistant borosilicate glass and measures 40 cm / 15.7 inches in height. The clear glass bong comes equipped with a stable, 12mm thick circular foot and an 18.8mm ground joint. You will also receive an 18.8mm > 14.5mm slitted diffuser downstem and a 14.5mm male herb bowl with glass roll stopper, which prevents it from rolling off surfaces.
The smoke will be thoroughly cooled and filtered through the submerged slits in the diffuser downstem before continuing up the tube and out of the thick, rimmed mouthpiece. A carb hole with a removable rubber plug can be found on the rear of the tube for extra control of your hits. The front of the tube is decorated with black and gold Black Leaf decal and a gold 7mm certification star stamp.
This 7mm thick straight glass bong is easy to maintain and the perfect equipment to share with your friends. Check out our extensive range of Black Leaf bongs, bubblers and accessories available to order at 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.



