The 936XL 936e Ink Cartridge Combo Pack by OFFICE KING is specially designed for use with HP OfficeJet Pro printers, such as the 9125e, 9120e, 9730e, and 9135e. These genuine/original cartridges are compatible with the specified HP models, ensuring high-quality printing results. With this combo pack, users can easily replace their old cartridges and continue printing without any interruptions. This product is a reliable and efficient choice for those looking to maintain the performance of their HP OfficeJet Pro printers.