traffic fence barrier 1.Max length of boom: ... 3.color is optional 4.AC /DC traffic fence barrier,Parking barriers,Safety barriers,Security barriers,BS-306(AC ... .This type of barrier could match with direct boom( pole), fold boom Or fence boom..4.Clutch ... 1998.3.Our main products are traffic barrier,garage door opener,swing gate operator,sliding gate ... ODM/OEM service is welcome. traffic fence barrier