Ink Compatibility: Use this refill ink on EB21B Black ink cartridge for use with Bentsai handheld inkjet printer B30 and B80.
^^ Ink Type: Water soluble ink use for printing on water-absorbing materials.
^^ Ink Capacity: 28ml x 4 pcs, Black color.
^^ Cost-Effective: Enjoy the same high print quality as the original EB21B ink cartridges, but reduce printing expenses by up to 70%.
^^ Clog-free Printing: Formulated to prevent clogging. Deliver amazing and smudge-free print quality.