... .air rubber hose are very durable 2.our air rubber hoses have comptitive price ... Size: 1/4", 5/16", 3/8",1/2",5/8",3/4",1" Color: Red, blue, ... can be imprinted on the rubber hose; 2.Working pressure: 300PSI (20Bar); Bursting pressure: 800PSI(60Bar);3.Structure: Inside bond ... layer + reinforcing layer ( second reinforcing layer for1/2",5/8 ...