Uni-ball One Refill - 0.38mm, 0.5mm

I like the uniball one pens, so it’s great to be able to refill them and not chuck as much plastic into the garbage. The black ink is great

The refills were perfect AND the packaging made them all the more special. Thank you!

As much as I use ink these refills hold a lot of ink. Easy to install. Great value. Bought blue and red. Note: both the 0.5 mm and 0.38 mm fit in my Uni Ball P One pen