Premium material: Our ink maintenance box is made of high-quality plastic and filter cotton, which quickly and effectively absorb waste ink, hold more waste ink, and provide stable, reliable, long-term performance. Size information: This replacement ink maintenance box measures approximately 7.5 x 7.5 cm. Please check the size carefully before purchasing. Compatibility: The ink maintenance box is compatible with XP-3100, XP-4100, XP-4101, XP-4105, Workforce 810DWF, 2830DWF, 2850DWF, 2930, 2950, 2851, L3550, and L5590. Please note that this product is not sponsored, endorsed, or affiliated with any brand whose devices it fits. Usage Tips: Follow the instructions to install the new ink maintenance box to help prevent print head clogging and extend the life of your printer. Color: Black Material: Plastic Package Contents: 1 x Ink Maintenance Box Note: Light reflection and different display settings may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3 cm.