In article , "Dave Plowman (News)"
writes
On Sat, 18 Jul 2020 01:22:40 +0100, John Rumm
wrote:

So there I am with a pack of M12 flange nuts and lots of threaded rod,
and I need an 18mm spanner...

Except the first set I try goes from 17mm to 19mm, so I look at my
socket set, same. Another socket set, same. The deep socket set
included with the pneumatic impact wrench, same again!

Had to use an adjustable in the end!

I've got a Powerfix (Lidl) set of combination spanners here, and that does
include 18mm.

Just checked my 'car' toolbox too, and there's a Halfords pro combination
18mm in that too. And in the socket set.

+1 Halfords Pro includes 18mm
--
bert