Schmidt® 635 Mini D1 Ballpoint Refill, Medium Point, 4pk

Available colors: Black, Blue, Red

Schmidt 635 Mini D1 Ballpoint Refills are German-made precision refills designed for compact, multi-function, and multi-pen writing instruments that use the D1 refill format. Featuring a medium point ball, these refills deliver smooth, controlled ink flow in a compact size, making them ideal for pens that combine multiple writing or utility functions in one body.

This refill fits standard D1 mini refill systems and is widely used in multi-function pens from brands such as Monteverde USA, Aldo Domani, Lamy, Pelikan, Rotring, Delta, Staedtler, Foray, and Yafa multi-function pens, as well as many international engineering and compact pen designs.

D1 refills are significantly smaller than standard ballpoint refills and must be matched by size and shape to ensure compatibility. They are not interchangeable with Parker-style or A3 refills.

Packaged in a 4-piece blister card, this refill set provides excellent value and ensures you always have replacements ready for your multi-function or compact pen.