Replacement caps for our 5 ml and 10 ml bottles. These are steel rollerballs with a taller cap to fit over the roller.
We ship these un-installed but they pop in fairly easy.
Rollerballs are generally fine for light travel or tucking in a bag, but they are not advised for situations where the air pressure might change like an airplane ride, mountain road trip or long distance shipping. In those situations we recommend a standard cap.
Search: Roller ball or rollerball caps.
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