Practical lamp holder: The lamp base with cable is mainly used to connect most E10 LED lamps. Very practical lamp holder, can be used for experimental circuit testing. Easy to distinguish: Each E10 LED holder has two wires, red and green. Red represents the positive pole and green represents the negative pole. Different colors are easy to distinguish and can be connected quickly. Multifunctional lamp base: The lamp base with cable socket can be used in homes, experimental circuits, electrical tests, physics teaching and old-fashioned flashlight accessory holders. Durable material: The cable of the E10 lamp holder's bulb connector is made of ABS, has good compression and impact resistance, wear resistance, not easy to damage. The inside is made of copper, with high hardness, not easy to rust and corrosion resistance. Satisfactory packaging: You will receive 20 E10 screw-mounted lamp bases, the lamp holder size is 2.4*1.5 cm, the wire length is 20 cm. Sufficient quantity allows you to replace old or damaged bases. Material: ABS + copper Lamp base: 2.4*1.5 cm Wire length: 20 cm