Water pipes & bongs
by EHLE
The EHLE Funnel Bowl Joint 18.8 is a handmade borosilicate glass bowl piece designed to fit any bong or water pipe with a standard 18.8mm female joint. Each one comes with a unique coloured design worked into the glass — you won't get to choose which pattern arrives, but that's half the charm. Simple, sturdy, and properly made in the classic EHLE tradition.
Each EHLE funnel bowl is handmade, so even within the same colourway there'll be slight variations. Here's what you're choosing between:
| Variant | SKU | What to Expect |
|---|---|---|
| Horns Yellow | HS1220 | Yellow horn-shaped glass accents worked into the bowl |
| Dots Blue | HS1219 | Blue dotted pattern — subtle, clean look |
| Spiral Rasta | HS1218 | Red, yellow, and green spiral wrap — the boldest of the three |
If your bong is mostly clear glass, the Spiral Rasta adds a flash of colour. If you want something that blends in, the Dots Blue is the quietest option. The Horns Yellow sits somewhere in between. None of them are wrong — it's purely aesthetic.
| Spec | Value |
|---|---|
| Brand | EHLE |
| Type | Funnel bowl (one-hit) |
| Joint size | 18.8mm (male joint — fits 18.8mm female downstems) |
| Material | Borosilicate glass |
| Construction | Handmade — each piece is unique |
| Design selectable | No — varies within chosen colourway |
| Available colourways | Horns Yellow, Dots Blue, Spiral Rasta |
| Intended use | Replacement or upgrade bowl for 18.8mm bongs |
Complete your setup: if your bong's downstem has seen better days, pair this bowl with an EHLE downstem in the matching 18.8mm size. And if you're after a proper deep clean before fitting your new glass, a bottle of Formula 420 or some coarse salt and isopropyl will sort your piece out in minutes.
Here's what we see all the time behind the counter: someone buys a solid bong — good glass, nice percolator, the works — and then uses whatever flimsy bowl came in the box until it cracks, chips, or just gets so gunked up it's barely functional. The bowl is the part you handle most, heat most, and knock against the table most. It's the consumable of the bong world.
The EHLE funnel bowl is borosilicate glass — the same stuff lab equipment is made from. It handles thermal shock far better than soda-lime glass, which means you can torch it, set it down on a cold surface, and not worry about hairline cracks forming over time. We've had customers come back years later still using the same EHLE bowl. The wall thickness on these feels noticeably beefier than the generic bowls you get bundled with most bongs. Pick it up and you can feel the weight — it's not a featherweight piece of tubing, it's a proper chunk of worked glass.
The one honest limitation: because each bowl is handmade, the hole size at the bottom can vary slightly from piece to piece. Some might pull a touch more freely than others. If you find the airflow a bit open, a small glass screen or mesh gauze sorts it out instantly. It's not a flaw — it's the nature of handmade glass. Mass-produced bowls from Chinese factories are more uniform, sure, but they also crack if you look at them wrong. We'd take a slight variation in hole diameter over a replacement every three months.
The 18.8mm joint size accounts for roughly 70–80% of the bongs we sell. If you're buying a replacement bowl blind and your bong is a standard full-size piece, 18.8mm is almost certainly the right call. The other common size is 14.5mm, which you'll mostly find on smaller rigs and bubblers. If in doubt, measure before ordering — a 14.5mm bowl rattling around in an 18.8mm joint is useless, and the other way round it simply won't fit.
One thing worth knowing about EHLE as a brand: they've been making glass in Germany since the early 2000s, and their stuff has always punched above its price point. The borosilicate they use is proper Schott-grade glass — 3.3 expansion coefficient, which means it can handle temperature swings of over 160°C without cracking. That's the same spec used in laboratory beakers. For a bowl piece that costs less than a decent sandwich, that's genuinely impressive engineering.
If your bong has an 18.8mm female joint on the downstem, yes. This is the most common joint size for full-size bongs. Measure the inner diameter of the opening — if it's roughly 18–19mm, you're sorted. It won't fit 14.5mm or 29.2mm joints.
You choose the colourway — Horns Yellow, Dots Blue, or Spiral Rasta — but because each bowl is handmade, the exact pattern varies piece to piece. No two are identical. That's the trade-off with handmade glass: you get craftsmanship, not factory uniformity.
Borosilicate glass contains boron trioxide, which gives it a low thermal expansion coefficient of around 3.3. In plain terms, it doesn't crack when you heat it and set it down on a cold surface. Standard soda-lime glass expands roughly 3 times more under heat — that's why cheap bowls crack after a few weeks of use.
Not necessarily, but it depends on the hole size in your specific piece. Handmade bowls can vary slightly. If finely ground material pulls through, drop in a small glass daisy screen or a mesh gauze. Costs almost nothing and solves the issue completely.
Soak it in 90%+ isopropyl alcohol for 10–15 minutes, then rinse with warm water. For stubborn buildup, add some coarse salt to the alcohol and shake gently. A pipe cleaner handles the inside of the joint. Do this once a week and it'll look new for years.
They're the two standard sizes. 18.8mm fits most full-size bongs and is the more common of the two. 14.5mm is typically found on smaller rigs, bubblers, and some mid-size pieces. They're not interchangeable — always check your downstem before buying a bowl.
The funnel shape is designed for single servings — pack what you need, clear it in one pull. You can pack it fuller for multiple hits, but the shallow funnel design works best when you're not overfilling it. That's the point: efficiency, not volume.
Last updated: April 2026
