TS16949:2009, ISO9001:2000, DOT certificate Double layer nylon tube reinforced tube :1).Material: PA, Nylon ,Polyamide2).Size: O.D.× I.D. ... 91.5 14×111.5 15×121.5 Inch: 1/4”,3/8”, 1/2”,5/8” etc.3). Working temperature: -40 ... pressure hydraulic lines; widely use for automobiles,machines.etc.7). Single tube,double tube------------------------------------------------NicholeMob.: +86- 159 2581 6050Tel: +86 ...