A-A-2131 Hose Assembly, Nonmetallic (Fire, 600 Lbs. Test Pressure) (S/S By A-A-59226)This description covers high pressure, all synthetic double-jacketed fire hoses, with couplings, for fire protective purposes and shall be furnished with the following styles and sizes, as specified: Style I - Hypalon coated; yellow, tan or red, as specified Style II - Uncoated.