1.Energy saving 3w led buld 2.gold color is aluminum material (radiator role) E27 Energy saving 3w led buldpower: 3W / 5W.gold color is aluminum material (radiator role)the screw is iron materiallong life up to 20,000hrs.save 80% energy,efficient, esecurity,energy savinginstalling or changing the lampstand, please servering the electrical. packing:1pcs/color box,100pcs in one carton,carton size: ...