Meet ISO 18752-BC Standard;
4 Layer or 6 Layer Spiral,High Tensile Steel Wire;
NBR Tube,Specially compounded for handling biodegradable hydraulic oil;
Tested with One Million impulse cycles without leakage;
Temperature ranging from-40ºF to +265ºF(-40℃ to +125℃)
Narrow Black Cover Wrapping with Non-Cover Removal(to withstand all weather exposure for over 3 years).