3mm Fitting, Outside Diameter: 4.2mm, Inside Diameter: 2.57mm Mutoh part numbers: DG-41079, DG-40999, Mutoh ValueJet 1604 / Valuejet 1604W Roland part number: 6085393800, Roland RS-540 / RS-640 / XC-540 / VP-300 / VP-540 / SJ-1000 / SJ-1045ex / SJ-645ex / SJ-745ex / SC-545ex / XJ-540 / XJ-640 / XJ-740 / LEC-300 / LEC-540 / LEJ-640 / RS-540 / RS-640, Asbru Saga 1600 Re-size Adapter may be required DX4/dX5 Printhead, for both solvent/eco solvent and water-based ink This high quality, generic large solvent resistant damper (3mm fitting) with large internal mesh filter compatible with recent models from Roland and Mutoh printers that require 3mm fittings for tubes Roland part number is 6085393800, Mutoh part numbers are DG-41079, DG-40999 and MY-48141