... cover, iron screw iron/brass contact, porcelain base Specifications lamp holder, light base 1.Material: PP/ABS cover, iron screw, iron/brass contact ... , porcelain baseSpecificationslamp holder, light base1.Material: PP/ABS cover, iron ... , 5A4.Packaging: 1pc/colour box, 100pcs/ctn5.Usage: lighting and lamp fields6.CE certificate lamp holder