allen key size?

my double glazed door has dropped and I need to adjust but do not know what size allen key can you help please
Sent with smiles from Val
Val, May 2020


done
Hi Val,
Although there are many different types of hinge it's impossible to say exactly, but 9 times out of 10 it will be a 5mm Allen key that's needed. Make sure to fully push the AK into the bolt so you don't do any damage to it!
I'd recommend buying a set of metric allen keys so you'll have every possible variation anyway.

Rupert, May 2020