CEYE for Canon MG7720 TS8020 TS9020 Empty Refillable Ink Cartridge 270 271 6pcs Empty refillable ink cartridge Clear plastic structure easy for ink level checking Built-in 2 micron filter to prevent print head clogged Reusable plugs for easy refilling.Suitable for all types of ink, dye ink etc With double ink capacity compare to original cartilage thus doubling the printing capacity