Unlike threaded jewelry, push-pin barbells are closed by inserting and pushing the pin-shaped ends into the bar and removed by pulling both parts apart.
This style of jewelry can be conveniently used in piercings like tragus and nostril, where threaded jewelry are more difficult to use.
Also piercings with smaller ends are much easier to open and close as push-pin.
Below is a description of how this system works.
① Insert the pin-shaped end about 1/3 to half of the way into the barbell.
② Once inserted 1/3 to halfway in, push the pin down slightly to bend the pin. *See Note 1.
③ Push the pin end all the way to close. The bent pin creates a tension inside the barbell to secure the pieces together.
④ Pull apart both ends to remove. If the pieces are tight, gently rotate the pin end as it is being pulled.