Good wear ability, smooth surface, low resistance, anti-rustiness and anti-scaling. Flexible, easily to be bent into all kinds of shapes, easy to install. This kind of polyurethane tubing has outstanding characteristic and other pneumatic tubing. This tube is very flexible and provides excellent bending capacity makes it an ideal pneumatic control or robot system. Also to many chemicals, gas, oil, and has a good wear resistance. 1'' air hose is a hose used in pumping of air .and is 50 meters per roll/bundle.