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
A
Audrey Arketa
I thought I’d ordered 0.38 in red but I ordered 0.5. Per online queries, the 0.5 still fits in my Uni Ball P One. Better inventory than Amazon. Fast shipping
