About this fire hose,outer jacket is made with high-strength synthetic yarn or polyester silk.Lined with rubber. Jacket:PolyesterLining: Natural rubberWorking pressure(bar): 8,10,13,14,16,18,20&22Bursting pressure(bar): 24,30,39,42,48,54,60&66Sizes: 3/4'',1'',1-1/2'',1-3/4",2",2-1/2",2-3/4",3"&4"Length per roll: 0-30MFire hose fire hose