The joint accessories link the welded wire mesh pannels which is with the frame,and the steel pipe pillars together. Mainly used for the road pertection,protection such as the highway. Anping FuYan Metal Products Co,Ltd Tel:86-0419-3792880 ADD:Nanxinying Industrial Zone. Anping.Hengshui City.Hebei.China Website: http://www.wiremeshmetal.net Email: sales2@wiremeshmetal.net Skype ID:chris.liu0626