Plated Lampholder ES / E27 10mm Threaded Entry, Shade Compatible (Lock Ring Not Included)
Width: 40mm, Height: 58mm
These lampholders are easy to use and hold shades well. Ideal replacements for plastic equivalents and will invariably fit in the same space as the plastic version. Mounts on a standard 10mm all thread. Fits a 40mm shade hole.
If in doubt consult an electrician