1) It is 100% pure silicone construction with smooth wipe down finish 2) Thickness range: 2mm to 6mm with one to five polyester layers 3) Polyester or nomex layers to enable high temp and pressure than original rubber hose 4) Excellent resistance to UV, water, ozone and oxygen 5) Reinforcement is made of polyester or nomex 6) Pressure range: 0.3 to 0.9MPa 7) Size tolerance: +/-0.5mm 8) Color options: blue/black/red/green/purple/yellow/orange, the standard color is blue 9) Silicone Radiator Hose