LJY 3-Pack UL Listed E26/E27 Edison Socket Medium Screw Base Retro Pendant Lamp Holder Without Switch and Cord (Black) Pack of 3 Units; Safety locking screw in base for secure fitting With hard paper inside the socket, seismic and impact resistance UL Listed: E255576 Helps you to create your own design Incandescent/LED lamp or chandelier. Comes with Strain Reliefs for wiring your hanging lights: Easy to install; Durable, heatless and long-lasting