... The material is ss304, 316, 316L, suitable for the glass curtain wall.2.Arms:6arms,4arms,3arms,2arms,1arms (includes long and ... introduce ourselves as manufacturer. Our factory is specialized in producing glass curtain wall finttings, spiders, fin spiders, routels, tension rod and tension ... any question regarding our products feel free to talk with us or visit our web glass curtain wall Spider fitting