Kaco Pure Gel Ink Refills for Retractable Gel Pens, 0.5mm, Fine Point, Bullet Tip, Pack of 10 (Black ink)
Brand: JINGHAO
Color: Black Ink

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.

Writing point: 0.5mm, bullet tip
Specification: length 110mm, diameter 5.8mm, item weight 31g(10pcs)
Ink color: Black
Package include: 10pcs/box
Asian Standard refills, fits for fits for kaco Alpha, Pure, Keybo, Midot, Rocket gel pen. Each refill with cover