Does the Holy Wrench work with super restores?

It does.

Didn't it only work with prayer potions? :-k

The Holy Wrench is a reward for the completion of the Rum Deal quest. If players have it in their inventory when they drink a prayer potion or super restore potion, they will regain an additional 1-3 Prayer points, depending on your Prayer level, although many players report an increase of only one point regardless of prayer level.

Thanks!

It works with super restores and prayer potions. Just to confirm :P