3M Blue Industrial Interchange Fittings 50′ X 38″ I.D High Pressure Straight Supplied Air Respirator Hose made of rubber is an economical way to provide a high level of respiratory protection. Respirator hose is equipped with MPT fittings at both ends and accepts 14″ FPT fittings. It is easy to maintain and requires no filters, cartridges or batteries to maintain. It is recommended for assembly, blasting, cleaning, facility maintenance, grinding, machine operations, painting, welding and sanding functions. It is suitable for automotive, transportation, food and beverage, metal production and fabrication, military maintenance and pharmaceutical, repair and operation industries. It can be used in in either high or low-pressure configurations and provides a full selection of components to create an airline configuration to meet your specific needs.