Ball pen refill GR-W5 blue 3 pcs. oil based

– for oil-based pens GR-5332, GR-5903, GR-590M
– for all other pens compatible with W1 refill
– oil-based ink provides smooth and seamless writing
– tip protected with safety ball
– blue ink color
– writing length: 550 m
– line thickness 1 mm
– waterproof ink