In article ,
Lurch wrote:
Many people of course won't have a small enough masonry drill, as this
size is probably rather small for general use.

What size? If the hole in the box is smaller than 5.5mm then the masonry
bit will make it 5.5mm, or have I misunderstood what you were saying?

I was just sort of rambling that perhaps most uses of wall plugs will
involve a larger size - fixing shelves etc. So all may not have small
enough plugs and a suitable drill lying around.

IIRC, the standard size hole in a metal box is 4.5mm.

--
*On the seventh day He brewed beer *

Dave Plowman London SW
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