... .11.Material:SBR Natural rubber; 2.Size: 1/4", 5/16", 3/8",1/2",5/8",3/4",1"3.Color: Red, blue ... layer + reinforcing layer ( second reinforcing layer for1/2",5/8",3/4",1")+ 8.outside bond layer; outside surface is mill ... .Application: wide rang service in general industrial service,pneumatic tools,and mobils shop.11.Temperature:-40`C~+90 rubber air hose