Gel Ink Pens Refills Black,50 Pack Gel Refills for Pens,0.5 mm Fine Point,130mm/5 Inch Pen Refills,Send 1 Extra Pens,Ink Non Bleeding Through,Smooth Writing.

I have a favorite geo one and this replacement refills matched perfectly! Fit exactly as the original and the gel pen writes smoothly! As a bonus it also came with an extra pen which also writes great. Great quality and price.

Not sure if a five star should be given for longevity or easy to hold since I have not had these refills very long and I don't know of anyone who would just "hold" an ink refill and try to write with it. That being said, I read the description and took a gamble that these would be perfect for the gel pen that I had. And they are! They write very smoothly and the ink doesn't smear. My hope is that since I had to order such a large quantity, that they will not dry up before I use them all, but even so I think this was a very good deal.

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Perfect refill for my pen!

This fit my Lazy Stars insaa 0.5 pen. The product was a little long, however I was able to cut it down and it worked perfectly. I haven't used it much, but it seems to write smoothly. Just so happy I can use my light up unicorn pen again!

Glad to have found these refills. Although I need to cut them short to fit them in my pen, the effort is well worth while.

These worked great for my no-name pen. Always double-check the measurements so they fit your pen. A mm ruler is good to have on hand.

The right size for my pen