No sponge Refillable Ink Cartridges set compatible for HP printers. They are made of clear frosted plastic. You can see the ink level on the inside at a glance. Each cartridge has an Auto Reset chip. They are brand new, virgin, not recycled or remanufactured which can be used over and over again. These cartridges can help you to save lots of money on printing not only black copies but also color copies.

Empty Refillable Ink Cartridges without Ink and Syringe.
HP 11 C4836A Cyan
HP 11 C4837A Magenta
HP 82 C4913 Yellow
HP 84 C5016A Black
HP 84 C5017 Light Cyan
HP84 C5018 Light Magenta

Compatible with the following HP Printers:

HP DesignJet 120 / 120NR / 10 / 20 / 50