Please according to the model of the original ink cartridge to purchase (previously used cartridge model) , don't directly according to the printer model,because the same printer model, different regions may use different cartridge model.If you any doubts, please contact us for advice in time.Thank you! Cartridge Model : T40D1 T40D2 T40D3 T40D4 Compatible brands: Epson Ink type: Pigment ink Volume: BK 65ML C/M/Y 50ML Whether the chip is included: Yes Compatible Printers: For Epson SureColor SC-T3100 SC-T5100 SC-T2100 Series Pirnter Features: 1: High yields for affordable high-volume printing.Same volume with original volume, make large printings. 2: Fast-drying pigment ink designed for high-speed print jobs. 3: Sharp text for professional-quality results.Any Question. 4: What's type of this ink bag?It is one time use ink bag with one time use chip and fast dring pigment ink.Could install and printing directly. 5: What's the ink inside, does it print good?The ink bag refill with fast dring that sepelized for this model. Price lower thanorigianl while good priting. Make priting more cost-effect. 6:If the chip different with us, our ink bag cann't using on your printer even printer model same.