BLUE SP-280 Lamp Holder Socket 4A 250V – Pack of 12

Durable lamp holder socket rated at 4A 250V, suitable for residential and commercial lighting installations. Pack contains 12 lamp holders for use with compatible light bulbs and fixtures.

If you can send a photo of the actual lamp holder inside the box, I can identify the exact bulb type (E27, E14, B22, etc.).