Lamy’s M21 Mini Ballpoint refill is a D1 refill that works with select Lamy pens, including the Spirit, Lamy 2000 4-color, and all of Lamy’s “multi-system” pens.
It’s one of the few ISO standard refill’s Lamy uses in its pen line.
Lamy M21 Ballpoint Refill Information
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|Ink Colors||Blue, Black, Red, Green|