Fire Hose Coupling Lug Style Storz Fire Hose Type 4-Layer Fitting Material Aluminum x Aluminum Fitting Type M Storz x F Storz Hose Color Yellow Hose Fitting A Material Aluminum Hose Fitting A Type M Storz Hose Fitting B Material Aluminum Hose Fitting B Type F Storz Hose Inside Diameter 4 in Hose Length 100 ft Hose Tube Material Rubber Jacket Material Rubber Maximum Working Pressure at 70F 250 psi Standards ISO 9001 NFPA 1961 Burst Pressure 750 psi