Only for E10 LED bulbs.Type E10 screwed lamp holder with cable.Cable length 20 cm.Use lamp bases used in old flashlights, experimental science teaching, craft materials, etc.The package contains 10 E10 lamp holders with cables.Product sizeE10 screwed lamp holder with cable lead.Inner diameter of lamp holder 10MMLamp base outer diameter 15MMLamp base height 23MMCable length 230MMProduct informationThe bottom of the lamp socket is positive.The lamp base side is negative.Product informationThe red cable connects to the bottom of the lamp socket, it is positive.The green cable connects to the side of the lamp socket, it is negative.Only for E10 LED bulbsThis is the E10 socket.It is suitable for E10 lamps.The incandescent lamp must not exceed 30 watts.Used in older flashlight accessory sockets, DIY physics teaching scientific experimental equipment.etc...The package contains10stand E10 lamp bulbs not included