Olight Refill for O'Pen Series

● Blue Refill: The refill Ink cartridges for O'Pen Glow, O'Pen 2, O'Pen Pro, and O'Pen Mini.

● Black Refill: The refill Ink cartridges for O'Pen 2, O'Pen Pro, and O'Pen Mini.

* 3 pieces per pack.

* Black Refill: Please take note that there is a risk of the plastic cap at the end of the pen refill falling off during the installation of O'Pen Glow.