What size bit to undo the sump pan?

[NX-STEP]

I want to give the car a regular oil change, what tool do I need to undo the oil sump pan bolt?
Also if I change the gearbox oil, what tool do I need to undo the gearbox sump bolt?
The car is a Clio 172 phase 2?

 

[N4TH4N]

Think they both the same mate 8mm square bit from the top of my head.