Non-Shunted Turn-Type T8 Lamp Holder JACKYLED 18-Pack UL Socket Tombstone with 1,Socket Tombstone with 1 Non-Shunted Turn-Type T8 Lamp Holder JACKYLED 18-Pack UL, With a bridge wire, they can be made shunted, This lamp holder allows you to connect a neutral wire to one end of the tube, Now, you can connect a neutral electrical wire to an end of a light tube without any trouble,It is also very easy to install a light in this socket, UL Socket Tombstone with 1 Non-Shunted Turn-Type T8 Lamp Holder JACKYLED 18-Pack.