This Hp 123tri colour and black colour cartridges is a combo pack fit for your HP printer. This cartridge is the genuine pack from HP manufacture to ensure better print out of your documents without fear of fading or aging out with time. Remember, Genuine inks will print on your documents for keeps. It will last ages. .

HP 123 ink cartridges work with: HP Deskjet 2130, 3630, 3635, 4720 Printers

High-speed performance—Genuine HP inks are designed to help you print fast without sacrificing quality. Rely on Genuine HP inks for durable black-and-white prints that resist fading, dry fast, and last

Legal disclaimer: HP Toners and Inks sold must be original and manufactured by the brand owners. Please be aware that HP will not honor warranties for any or all counterfeit products or products sold or supplied via unauthorized offline and/or online distribution channels.
HP brand and our affiliates strongly encourage our clients and potential clients to avoid any counterfeit products by all means that are falsely distributed via unauthorized online and/or offline distribution channels. Online offers of supplies are monitored and will be reported to authorities in case evidence of counterfeit or fraud is identified. Any merchant flagged for selling counterfeit HP Cartridges or violating policies against counterfeit sales would have their stores suspended.
Not sure if you have Original HP printing supplies, See here https://www.hp.com/us-en/cartridge/anti-counterfeit.html