Keep your printer running smoothly with this 2-pack of C9345 maintenance cartridge replacements. Designed for compatibility with a wide range of printer models including ET-16650, ET-5850, ET-5800, ET-5880, WF-7840, ET-16600, ET-8550, ET-8500, WF-7820, WF-7310, EC-C7000, ST-C8000, and ST-C8090. These maintenance boxes efficiently collect waste ink during printing operations, preventing messy overflow and maintaining optimal printer performance. The cartridges feature a user-friendly design with clear installation indicators and are engineered to meet the specifications of the original C12C934591/PXMB9 maintenance box. Each unit provides ample capacity for extended printing sessions, reducing the frequency of replacements and helping to maintain consistent print quality.