... .1156,1157,3157,3156,7440,7443 socket all available 3.Socket material is made up of copper ... of copper,with oxidation treatment on surface3:The socket material of 3157 led brake light is ... well-distributed.1156,1157,3157,3156,7440,7443 socket all available,we can make it according to ... Introduction:1:Type: T20 3157 scoket car brake light2:Socket: 31573:LED quantity: 37leds4:LED Specification: 3mm LED ...