The J 7-9 is a paint-twin tube manufactured by Jumboflex. Comprised of a paired air hose and pressurized solvent transport hose, it has the ability to considerably resist solvents and withstand crush. In addition, it is made of nylon for the inner part, polyurethane for the outer part, and ester-polyurethane for the air hose reinforcement.
The tube can be used in different applications including the pressurized paint and thinner transport.