pf2e.fyi
From Pathfinder #152: Legacy of the Lost God, which isn't enabled.

Acrobat's Staff

ITEM 6
UNCOMMONFORTUNEMAGICALMONKPARRYREACHTRIP
Price 235 gp
Usage held in 2 hands
Bulk 2
Category martial
Group club
Damage 1d8 bludgeoning

This +1 striking bo staff is particularly long, making it useful as a balancing pole. While you wield it, the acrobat's staff releases chalk dust to make your grip more secure, granting you a +1 circumstance bonus to your Reflex DC against checks to Disarm you of it.

Activate command
Trigger You fail or critically fail an Acrobatics check to Balance and would fall
Effect Reroll the Acrobatics check and take the better result.
Pathfinder #152: Legacy of the Lost GodOGL