3M Supplied Air Hoses are NIOSH-approved breathing grade hose with a special liner to prevent hazards like flaking and degradation.
They are extremely kink resistant.
They are also resistant to absorption of tastes and odors from chemicals in the local environment.

Sections are equipped with male NPT fittings at both ends; these accept female NPT fittings
Low pressure hose (red) is typically used with air pumps producing pressures in the 17 psi range; multiple lengths of this hose may NOT be combined
By comparison, high pressure hose (blue) is typically used with high pressure compressors producing pressures in the 100 psi range
Can be used with 3M H-Series and L-Series systems
Note -female NPT fittings shown in the image are for illustration only, and are sold separately