Opus 88 Koloro fountain pen
Eyedropper, shut-off valve, capacity
Best · FIL
Cartridge/converter, piston, eyedropper, vacuum — capacity, mess, and maintenance compared.
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Eyedropper, shut-off valve, capacity
Pilot Custom 823 fountain pen, vacuum-filling mechanism.

`[maint]` Unlocks bottled ink
Nahvalur Original Plus fountain pen, vacuum-filling, multiple colorways.
TWSBI Eco fountain pen, piston-filling mechanism.
Original nib & ink art, made to order.
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