Best mount

[eplfan2011]

Hi
I’ve got a 40g breeder which has been converted to a Aio peninsular style.
I’m going to put 2 AI primes over it, what are the best mounts to use for this?

 

[vetteguy53081]

The solid non flex ones

 

[eplfan2011]

Thanks, is it a one size fits all deal, as I see flexible mounts come in different sizes.
That’s the mount I’ve been considering.