O-refill Blue & Black

The refill ink cartridges for o'pen mini 2, glow o'pen glow, 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.

The refill ink cartridges for o'pen mini 2, glow o'pen glow, o'pen 2, o'pen pro, and o'pen mini. 3 Pieces per pack. * Black refill: