Glass Bongs Australia Blog

How To Measure Joint Sizes

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How To Measure Joint Sizes

All bongs purchased at Glass Bongs Australia come with a downstem and cone piece. They’re ready to rip as soon as soon as they’re out of the box. However, if you’re looking to customise, upgrade or replace accessories such as cone pieces, nails, ash catchers, adapters and connectors or downstems, you’re going to need to know about genders and joint sizes to ensure you make the right purchase for your bong or dab rig.


Joint Genders & Shapes

Your bong, dab rig and accessories are classified with a gender. They’re either male or female. Male pieces go into female joints whereas female pieces sit on top of male joints. Think back to the awkward chat with your parents about the birds and the bees and you’ll never confuse the two again. For example, most bongs at Glass Bongs Australia come with a female joint meaning you will require a male joint accessory. If your bong or dab rig has a male joint, you will require a female joint accessory.

What Is A Female Joint?

Female joints are the most common style of joint you will see in bongs and downstems at Glass Bongs Australia. A female joint has a wide opening allowing for a male joint to be inserted inside of it. For example, a standard cone piece with a male joint will fit comfortably inside of a female joint.

What Is A Male Joint?

Male joints are the most common for accessories. Most of our cone pieces and tar catchers have male joints enabling them to be inserted into female joints found on most of our bongs. Male joints on bongs are not as common however they can be found on many dab rigs as in-built stems. This means many of our dabbing accessories such as bangers and nails come in female varieties which rest on top of the male joint.

Can You Give Me An Example?

You bought a new bong or dab rig and you’re looking for a new cone piece. If your bong has a female joint, you will need a male cone piece to insert into the female joint. The opposite applies if your bong or dab rig has a male joint.

Male and Female Joints


Joint Sizes

Before you buy a new accessory for your bong or dab rig such as a cone piece, downstem, ash catcher, nail, banger, dome or percolator, you will need to know its gender and joint size. Bong joints come in three different sizes: 10mm, 14mm and 18mm. The most common joint size is 14mm. You will rarely see 10mm joints and 18mm are often only found on larger bongs and dab rigs.

Note: If you notice any products with 14.5mm or 18.8mm joint sizes, don’t stress. This is the technical size. 14.5mm and 18.8mm is the same as 14mm and 18mm respectively.

10mm Joint

Often referred as mini, micro or nano joints, 10mm joints are often found on smaller compact bongs and dab rigs designed for convenience and portability.

14mm Joint

14mm is the most common of all joint sizes. The majority of small to medium sized bongs and dab rigs have this joint size.

18mm Joint

18mm joint sizes are usually only found on larger bongs and dab rigs. The purpose of a larger joint size is to increase the airflow as the piece is larger.

Can You Give Me An Example?

You bought a new bong and you’re looking to purchase a new cone piece. If your bong has a female joint and it’s 14mm, you will need a 14mm male cone piece to insert into the female joint. The opposite applies if your bong or dab rig has a male joint.

Joint Sizes


How Do I Measure Joint Sizes?

If you don’t know the size of your joint, it’s important you measure it before making an accessory purchase. Always measure the width of your joint at the widest point. There are two ways to measure the size of your joint depending on its gender.

Female Joint Measurement

You need to measure the inner diameter at the top of the female joint. There may be some slight variations between different joints, however the measurement closest to 10mm, 14mm or 18mm will be the correct size of the joint.

Male Joint Measurement

You need to measure the outer diameter of the widest part of the male joint. Again, there may be some slight variations between different joints, however the measurement closest to 10mm, 14mm or 18mm will be the correct size of the joint.

Where To Measure

If you're still unsure, don't hesitate to contact us. We're more than happy to assist you before you make a purchase. 


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