Spring air hose: good softness and flexibility,environmental and nontoxic material. Spring air hose: • Material:PA,PU etc. • Hose size(OD*ID):12*9,12*8,8*1, 4...22mm or others • Protection:spring or plastic • O.D. of turn:110,90,80,70,60,50mm etc. • Helix turns:12,16,18,20,22,24,26,28,30.etc. • Stretched length:5m,5.5m,6.5m,7.5m.8m,12m etc. • Explosion Pressure :6Mpa(=60Bar) • Fitting:With two ...