pf2e.fyi
From Pathfinder Adventure Path: Hellbreakers, which isn't enabled.

Shacklebreaker (Greater)

ITEM 10
UNCOMMONINVESTEDMAGICAL
Price 950 gp
Usage worn
Bulk L

This bracelet has three charms depicting a dagger, a shield, and a rose. While wearing this bracelet, you gain a +2 item bonus to Thievery checks. Whenever you roll a success to free someone from manacles, it counts as two successes (three on a critical success).

Activate—No Chains (manipulate)
Frequency once per day
Trigger A creature attempts to Grapple you
Requirements You are aware of the creature and aren't Off-Guard
Effect The bracelet yanks your body in one direction, attempting to throw off your attacker's grip. You gain a +2 circumstance bonus to your Fortitude DC against the triggering Grapple.
Pathfinder Adventure Path: HellbreakersORC