Product Review

These refills are Bright color, Quick-drying, Water-resistant and Smear-free
It's Asian Standard refills, length is 110mm, length is 110mm, length is 110mm. fits for Asian Standard gel pen and kaco Alpha, Pure, Keybo, Midot, Rocket gel pen etc.
If you don't know whether it fits your pen, you could measure your original pen refill.