How to Read a Bong Product Description Like a Pro

You are looking at a bong listing that says "14mm female joint, 5mm borosilicate, honeycomb perc". Three specs, and each one tells you something that decides whether you will be happy with the piece.

Joint size decides what accessories fit. Perc type decides how smooth the hit is. Thickness decides how long it survives, though not in the way most people assume.

Almost all of this gets bought online now, off text and photos, without anyone handling the piece first. So reading the description properly is the only inspection you get.

Here is what each spec means and what to do when a listing leaves one out.

Joint Size: The Number That Decides What Fits

Joint size is the most practical spec in any listing. It tells you which bowls, downstems, ash catchers and bangers will physically connect. Get it wrong and the accessory simply will not fit.

Three standard sizes cover almost everything:

• 10mm — mini bongs and compact dab rigs. Smallest opening, so it clogs faster and needs cleaning more often.
• 14mm — the dominant standard by a wide margin, and the safest choice for a first piece. Most bowls, bangers and accessories on any site are made for it.
• 18mm — sometimes written 18.8mm. Large bongs and heavy scientific glass, with the most airflow of the three.

If a listing does not state the joint size, that is worth asking about before you order, because a mismatched accessory is a wasted purchase. Our guide to identifying your joint size and gender shows you how to measure a piece you already own.

Male vs Female

Joints come in two configurations and this trips up most first-time buyers.

A female joint is a wide opening that receives an accessory. A male joint is a tapered end that slides into a female opening. Your accessory has to be the opposite of the joint it connects to.

Most bongs come with female joints, so you will usually be buying male bowls and bangers. Check both the size and the gender before ordering, because 14mm male and 14mm female are not interchangeable.

Adapters exist that convert between sizes, which is useful if you are upgrading and want to keep your old accessories. We do not stock them, so that is one to source elsewhere.

Percolators: What They Do and Which to Pick

A percolator is a glass structure inside the bong that splits smoke into smaller bubbles. More bubbles means more contact between smoke and water, which means more heat pulled out before it reaches you.

Combustion at the bowl is extremely hot. Water takes a large share of that out on the way up, and the perc is what does most of the work.

The Common Perc Types

These names come up constantly in listings:

1. Diffused downstem — slitted tube sitting in the water. Simple and effective.
2. Tree — multiple slitted arms hanging from a central tube.
3. Honeycomb — flat disc with dozens of holes, sitting horizontally in the tube.
4. Showerhead — flared tube with slits around the bottom.
5. Inline — horizontal slitted tube at the base.
6. Turbine — angled slits that spin the water into a cyclone.
7. Matrix — cylinder with slits on the top and sides for diffusion in two directions.
8. Swiss — holes punched through the body of the glass.
9. Dome or Fabergé — enclosed dome with slits, common in recyclers.
10. Drum — barrel-shaped chamber with perforations around the sides.

How each one behaves in practice is covered in percolator bongs explained.

Which Perc Should You Pick?

Honeycomb and showerhead are the best all-rounders. Good diffusion, light drag, and simple enough shapes that cleaning is not a chore. Honeycombs typically run 20 to 40 holes, with finer versions going higher.

The myth worth killing is that more percs is better. Every chamber you add makes the pull heavier and takes a little more flavour with it. Two is comfortable, three you feel, past that you are working for every hit. We go through where that trade stops paying in multi-percolator bongs.

On tree percs, know what you are getting. Those thin arms diffuse well and they are the most fragile part of any bong. They snap on impact and they clog faster than a showerhead. Buy one if you want the diffusion and you keep your glass somewhere safe. Buy honeycomb or showerhead if the piece gets moved around.

Glass Thickness: Why One Number Is Not the Whole Story

Thickness is measured in millimetres and refers to the tube wall. It gets cited in every listing and it is not the full picture.

A 9mm bong still breaks if the joint transition is weak, the welds are uneven, or the piece was never properly annealed.

Three Measurements, Not One

Three numbers actually decide how tough a piece is:

• Wall thickness — the main chamber.
• Joint thickness — how the joint handles stress from bowls and downstems.
• Base thickness — stability and resistance to tipping.

Listings almost always cite only the wall at its widest straight section. The base can be half that, and the joint may have minimal weld support behind it. If you can get the full set of numbers, do.

The Annealing Factor

Annealing is the step nobody advertises and the one that matters most. After forming and welding, the piece goes into a kiln and cools slowly under control, which releases the internal stress built up during shaping.

Skip it or rush it and the glass carries hidden tension that cracks later for no obvious reason. A well-annealed 5mm to 7mm piece with solid welds outlasts a poorly made 9mm one.

So thicker is not automatically better. How it was made matters more than how much glass is there. We cover manufacture in more depth in American made bongs.

For daily use, 5mm is the sweet spot. Heavy enough to survive normal handling, light enough to hold comfortably. The 5mm to 7mm range is the balance most people want.

Look for borosilicate in the description, sometimes written as COE 33. It is the standard for heat resistance in this category. If a listing just says "glass" with no further detail, ask before you buy. The difference between borosilicate and cheap soda-lime is covered in borosilicate vs regular glass.

Reading Any Bong Listing in 60 Seconds

1. Joint size — 14mm female is the safest for accessory compatibility.
2. Joint gender — your bowl or banger must be the opposite of the joint.
3. Perc type — honeycomb or showerhead for the best balance. Tree if you want diffusion and will look after it.
4. Number of percs — one or two. Three if you really want it. More than that costs you more than it gives.
5. Thickness — 5mm minimum, and check whether the number refers to the wall, base or joint.
6. Material — borosilicate stated explicitly. "Glass" on its own tells you nothing.
7. Height — 10 to 14 inches for daily use, taller only if it has a permanent spot.

If a listing mentions annealing, reinforced joints or full-piece thickness, that is a seller being transparent. Treat it as a good sign.

Shop Smarter

Three pillars, and now you can read them. Joint size tells you what fits. Perc type tells you how smooth it will be. Thickness, and how the glass was made, tells you how long it lasts.

Our glass bongs list joint size, height and material on every product page, and if a spec you need is missing, ask us before you order rather than after.

Free shipping on qualifying US orders from our Los Angeles warehouse. Returns run 14 days with no restocking fee and no return postage, and if glass arrives broken a photo within 14 days gets it replaced.

If you are still deciding on shape and size rather than reading specs, start with our bong buying guide.