... protect the parts on the back of the bulb.4:About this G4 5050SMD led top light,It’s No Mercury or other ... Description1:Model No: G42:LED quantity: 9SMD3:LED Specification: 5050 SMD 4:Color:Red,yellow,green ,blue,white,amber and so on ,all are ... : Widely used in ships, advertisement boards, or as light sources of desk lights,reading light 12 volt LED Bulbs - G4 Side Pin LED Bulbs