The GB1685 is a GR10q Surface Mounting Lampholder sutable for 4 Pin 2D16, 2D21, 2D28, 2D38 and 2D55 Watt Lamps. Fixed by a plit pin push/snap mounting configuration
“I purchased this item together with a 4pin LED unit to refit ceiling light.
I was surprised and disappointed to find it had no means of fixing power to it. totally useless!”
“Used the product to refurbish some Fitzgerald lighting back plates.
Seem good quality.
The heat will eventually ruin these like the original components but they are easy to fit..”