Martin Brown wrote:

Jeff Layman wrote:

I am replacing some old wall lights with some new Där fittings.

Surprisingly, not an IKEA product.

I was somewhat surprised to see that the wallplugs and screws
supplied were of different lengths. The wallplugs were 25mm x 5mm,
and the screws 35mm x 3.5mm. The diameters match well, but why
would you use a 35mm screw with a 25mm wallplug?

Is the object being screwed to the wall 10mm thick by any chance?

What was my first thought, which model?

https://www.darlighting.co.uk/products/wall-lights