... ability, smooth insidestructure makes it easy to go thread. 2. High waterproof, insulated, chemical resistance 3. PVC sheath, adding in ... explosion-resistanceApplication: Railway, vehicle, traffic system project, air-condition. Various machine tool and machines. Automatic controlequipment station span. Cable protection in ... 1/4", 11/2", 2", 2-1/2",3", 4" High Quality! Low Price!! Flexible Metal Hose