Our Service: If you have any problems related to this ET7700 ET7750 maintence box, contact our service and you will get response within 12 hours. What's In The Box: T04D0 maintenance box x 2, two-head screwdriver x 1, PE seal bag x 2. Everything you need to replace the maintenance box is in the box, easy to do. Stable & Reliable: Super-absorb sponge and strong PE structure helps to hold 20% more waste ink, leak-free, stable chips. Compatible Printers: The T04D000 Ink Maintenance Box works with EcoTank ET-7700 and ET-7750. Part Number: T04D0/T04D000/EWMB1.