max # of modifiers on wand/rod & foci?

what is the max # of modifiers on wand/rod & foci?

so far i've seen up to two.

You cant add suffixes and prefixes to wands and foci, if thats what you mean. Only staves are upgradable, and it's 2 for every upgradable weapon.

This may sound stupid but what is foci ? Is it focus items ?

Foci is an off handed item that gives you energy

Foci is the plural of focus. So the above sentence should read: Foci ARE the off handed items that give you energy.

Whatever...