rubber air hose Material: SBR&NBR Working pressure:6bar~20bar Length:30~100meters Color:black, red, yellow and etc. rubber air hosethe outer layer is red,blue,black,yellow in colour. The main material is SBR&NBR. The working pressure less than 20bar(300psi), the burst pressure is 60bar(870psi).Material: SBR&NBRWorking pressure:6bar~20barLength:30~100metersColor:black, red, yellow and etc. ...