Feature: 1. Compatible Model: This ink maintenance box is suitable for ET‑16500 WF3520 WF3540 WF3620 WF3640 WF7715 WF7725 WF7510 WF7610 WF7620 WF7710 WF7720 printers, has strong compatibility. 2. Product Usage: This ink maintenance box can collect the waste ink generated by the printer during printing, prevent clogging of the print head, and effectively extend the service life of the print head. 3. Intelligent Chip: The T6711 waste ink box adopts excellent chip, making it convenient to recognize the printer and providing smoother printing performance. You can use it with confidence. 4. ABS Material: This ink maintenance box is made of excellent ABS material, which has good toughness, high strength, wear resistance, oxidation resistance, light weight, and a long service life. 5. Printer Replacement Part: This plastic waste ink box is compact and lightweight, making it convenient to install and replace. When the printer issues an alarm, please replace the ink maintenance box. Specification: Item Type: Ink Maintenance Box Product Material: ABS Applicable Model: For ET-16500 WF3520 WF3540 WF3620 WF3640 WF7715 WF7725 WF7510 WF7610 WF7620 WF7710 WF7720 Printer. Package List: 1 x Waste Ink Tank 1 x User Manual