Construction: Tube:Inner tube in high quality synthetic rubber compounds(Nitrile) Reinforcement:One braid of high-tensile steel wire (Up to 1/2" one, om 5/8" tow high tenstile steel wire spirals layers) Cover: Abrasion & weather resistant synthetic rubber(Neoprene) Temperature range: -40° C to +100° C. Application: High pressure hydraulic applications designed to replace 100R1 where higher pressures,increased flexibility and maximum abrasion reistance is required.