Features 1、Compatible Bulb Specification: 3157 3057 3155 3357 3457 3757 4057 4114 4157 3156 3056 3456 4156 (suitable for single / double lamp tubes) 2、Save Time Effort: The lamp holder is equipped with pre wiring, which is convenient for plug and play installation and saves time and effort 3、Durable: High temperature resistant nylon base and rubber gasket are durable and not easy to aging 4、Material: Made of high quality nylon red copper rubber, with low transmission loss and high temperature resistance 5、Copper Wire: Use copper connecting wire, has good conductivity, high temperature resistance, low transmission loss Specification Item Type: Bulb Socket Wire Material: Nylon, Red Copper, Rubber Compatible Bulb Specification: 3157 3057 3155 3357 3457 3757 4057 4114 4157 3156 3056 3456 4156 (Suitable for Single Double Lamp Tubes) Package List 2 x Bulb Socket Wire