Hybrid air hose provides the no-compromise solution that allows both exceptional flexibility and superior abrasion and general wear resistance For demanding heavy duty truck and industrial applications, hybrid is the air hose solution of choice Exterior and interior hose layers: premium polymer for excellent flexibility Interlayer: reinforced polyester for strength and longevity. Solid crush proof couplings for leak proof sealing: 1/4-Inch fittings for 1/4-Inch and 3/8-Inch ID, and 1/2-Inch fittings for 1/2-Inch ID Temperature range:-40-Degree C (-40-Degree F) to Plus 82-Degree C (180-Degree F) – wide spectrum of indoor/outdoor applications, ideal for extreme cold weather environments Abrasion resistant outer cover for service longevity UV, ozone, and chemical resistance for safety and long service life 300 PSI maximum working pressure, 4:1 safety factor (1,200 PSI burst pressure)