Titanium Pen Refill Cartridges (3 Pack)

These are tiny, about an inch shorter than I expected, but they drop right in and write smooth. Three in a pack means I'm set for months, and the light weight doesn't throw off the balance at all.

Swapped one of these into my pen and it writes just as smooth as the original cartridge did. Nice that each one only weighs about a gram, so the pen stays light in my hand during long writing sessions. Three in a pack means I won't need to reorder for a while.

I was worried these would feel flimsy, but each cartridge has a nice bit of heft at about a gram and slots in perfectly. The 3-inch length matches the originals exactly, so no wobble when I write. Three in a pack means I'm set for a long while.