Pilot Gel Ink Refills for FriXion Ball 4 Gel Ink Multi Pen, 0.5mm, Black/Blue/Red/Green Ink, 6 Packs 12 refills total Value Set

I use these to refill my erasable pen. I like the color variety and the ink run time. Easy to insert into the pen. Use for my checkbook as I usually make a math error that needs to be fixed. Would recommend.

Perfect for my kids to mark their Bibles.

Love this pen

Work well like they should, however, they empty MUCH quicker than the initial ink does.

Bought these to use in my slim bodied Frixion pens. they're a bit shorter than regular refills so they fit the slim bodies, best part is they're still a 0.5 nib and the fact that they fit in the thinner bodied Frixion pens is great for my sometimes swollen hands. this is my go-to for refills for the slim bodies.

I absolutely love them!!!!! The Frixion erasable pen itself is a game-changer for me. I'm a nurse who also has a bit of OCD lol. The multi-color and erasable aspect of the pen makes this perfecttttt! I love that I can use these to refill the individual pen inks instead of my past non-erasable and non-refillable pens where I have to try to finish off the other remaining colors before I move on to another pen (or worse - swap out to a different pen and have the remaining ones sitting there just be unused). Refilling is easy (twist off the pen cover and use a tiny bit of force to pull out the pen ink you want to replace and just stick the new one on and cover it back up). The only downside to this is if you write A LOT, the ink does run out pretty quick compared to usual pens.

I have the Frixion Ball 4 color pen and my ink had ran out after 3 months of heavy use. I decided to buy the refill and so far, these have worked very well. Replacing the dried out ink with the new ones hasn't been difficult. Just unscrew the pen, pull out the old colors and stick the new ones in. Then screw the top back on.Just make sure when you order these that they match your pen size. Mine were 0.5, but other pens may be 0.7, so it's important to check first.

We very much enjoy the pens and these refills work well; so far none of the refills flagged failed. ITS A KEEPER.