Smooth Surface Air Hose : 1.I.D:3/16"~4" 2.W.P:20 BAR 3.Model Number : Smooth Surface Air Hose . ... Smooth Surface Air Hose :1.I.D:3/16"~4"2.W.P:20 BAR3.Model Number : Smooth ... the transportation of high pressure air or water liquid. 3.Material: inner tube is made of SBR or NR; ... , red, blue, green, yellow, white, grey I.D.O.D.W.P.REIFORCE LAYERWEIGHTUNIT LENGTHin.mmin.mmpsi.mpa.kg/mm ...