Robert Oster Water - 50ml Bottled Ink ink-cartridges ystudio’s special design spring cap

ystudio’s special design spring cap structure

all of which contribute to the depth of each individual hue

The Diamond 580 comes with a benchmark ink-filling mechanism and has all detachable parts

Maxi universal cartridges (x7)

Carry your writing supplies everywhere you go or simply use the writing box as an attractive display for your treasured fountain pen collection

Robert Oster Water - 50ml Bottled Ink ink-cartridges ystudio’s special design spring capRobert Oster Signature Fountain Pen Inks are non toxic and eco friendly. Produced in a just in time manner means that stock isn't warehoused for lengthy periods. In fact, Robert insists on producing the inks in quantities specific to daily requirements and orders are literally filled into bottles specific to our retail partners' particular needs. You can know that your ink bottle was filled and shipped just before it was offered for sale.