Sheaffer Ballpoint "K" style refill, Black, Fine. "K" style refills fit most Sheaffer ballpoint pens (exceptions include some of the newer Cross manufactured Sheaffer pens, which take "T" Parker style refills).

Sheaffer Ballpoint "K" style refill, Black, Medium. "K" style refills fit most Sheaffer ballpoint pens (exceptions include some of the newer Cross manufactured Sheaffer pens, which take "T" Parker style refills).

Monteverde Mini Push-In Style Converter - Monteverde USA® Piston Ink Converter Mini Push-In Style To Fit Monteverde USA® And Most Fountain Pens.

Lamy LZ28 Fountain Pen Converter - The LZ28 converter is suitable for all Lamy fountain pens.

Cross 8756 Fountain Pen Converter - Piston converter for all Cross fountain pens EXCEPT Townsend and Adventura.