M&G MG-1530 0.5mm 1500M High Capacity Ink Neutral Refills - Black (10 PCS)
This refill apply to the neutral pen GP-1530 series GP-1660 series GP-1800 series GP-1890 series GP-0280; Large capacity for the core writing up to 1500 meters; 0.5mm nibs 360 ° smooth fluent writing do not leave the ink.