This 25m long PA ink tube resists highly aggressive chemicals. The inner diameter is 2 mm and the outer diameter is 4 mm. The tube is plasticizer-free and reduces the risk of contamination of the inks. The exceptionally smooth inner surface slows down particulate build-up. This high quality solvent resistant tube can be used on all grand format printers for connections that don't require very flexible tubes such as Tygon®.