CISS cartridges row pipes, the specifications includes 12,8,6,4 row pipes;

 Size: outter diamter and inner diameter and - 5.8mm * 3.8mm, 3.8mm * 1.8mm , 2.8mm * 1.5mm, 2.7mm * 1.4mm, 2.6mm * 1.3mm.

Material property: anti-UV aging, cold (no worry about hardening in winter), with flexibility (easy assembly, easy to take off), moderate hardness, tube wall is divided into frosted, transparent and so on, all materials are environmentally friendly .