... ,smooth, bright,strongh resistance,physical inertia, etc. Ink Tube (PU air hose) Technique parameter:Density: g / am cubic (2.10- ... /0805/0604/042.5mmLength: 50/100m Characters:1. Use genuine PU material, the hose is smooth, bright, and has standard inside ... , appliances, furniture, toys, machinery, medical equipment, sports equipment, audio, lighting, chemical and other industries.