Inner Tube:Oil resistant synthetic rubber Reinforcecent:Four layers of high-tensile steel wire Out Cover:Environment resistant synthetic rubber Standard:ISO 3862-1 4SP EN 856 4SP Length:20m-50m Temperature Range:-40â??-100â??(-40�°F-212�°F) Working Pressure:16.5MPa-45MPa Surface:Wrapped cover or smooth cover Color:Black Application:Very high-pressure applications used for petroleum-based hydraulic fluids.