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4 pack ND Brand Dinsink HP 564 564XL Refillable ink Cartridges with chips for HP

Product Description :
The prefilled cartridges can be used as regular ink cartridges for an easy using
The cartridge can be easily refilled and reused again and again
There are easy-refill hole and rubber plug on the top of each cartridge
The cartridge is transparent It is easy to view how much ink left to prevent from lack of ink to cause air bubbles or how much ink filled in to avoid overfill for easy operation
These patented cartridges are environmental friendly 3R recycle reuse reduce green products for endless inkjet printing with big saving