... 4.competitive price 5.fast delivery Screw light base JM-507 Detail picture: Feature of our company ... niu, PHIELYER, makel or customer's wantedMaterialBrass/aluminum/iron+bakelite/plastic/porcelainColourWhite, Black and customer's need.CertificationCEPackage60pcs ... lamp holder, porcelain lampholder, ceramic lamp base,lamp cap,plastic lampholder base,bakelite and plastic lampholder, E27&B22 Lampholder ...