Fuel and oil hose, coupled and uncoupled, for use with gasoline, oil, diesel fuel, lubrication oil, or the vapor present in either fuel system or in the crankcase of internal combustion engine in mobile, stationary and machine applications 。 
30R2：coupled and uncoupled synthetic rubber tube and cover.
30R3：lightweight braided reinforced lacquer, cement or rubber covered hose
30R5：wire inserted synthetic rubber tube and cover
30R6、30R7、30R8：low pressure coupled and uncoupled synthetic rubber tube and cover