4 Packs Pre-filled Refillable ink Cartridge For HP 564
(1 Black, 1 Cyan, 1 Magenta, 1 Yellow)
New Chip, Show ink level
Easy to refill! No mess! Never run out of ink!
Half Sponge, Transparent cartridges are easily refilled through the refill hole on the top of the cartridge.
Simply remove the colored rubber plug inject the ink into the hole until full and put the plug back in