Can anyone explain the ability 'the long pain' for me.

Is it just the standard fists of the monk but then ranged or am I missing something?

From some limited testing, I don't see any change in stats after casting them, but wanted some confirmation whether it's worth it.

 

 

In Poe1 Long Pain had massive base damage, due to Long Pain getting Transcendent Suffering bonus added to the base, unlike normal fists where iit was a flat addition.

(mousing over normal fists would give you the base damage first and then the TS bonus, while with Long Pain you'd just get the massive base damage, which ofc improved a lot with levels)

Also you can use all melee abilities with the Long Pain although they are ranged.