Could someone fill in the blanks as to what is needed to change the front diffy and rear tranny fluids as far as plug sizes go?

Rear tranny drain: 8mm allen
Rear tranny fill: ???

Front diffy drain: ???
Front diffy fill: ???

Engine oil drain: 6 mm allen

I’ll be ordering the Polaris fluids soon but don’t want to get caught without the right size tools for the plugs. 🙂