From Pathfinder Lost Omens The Grand Bazaar, which isn't enabled.

Pummeling Snare

ITEM 5

UNCOMMON CONSUMABLE MECHANICAL SNARE TRAP

Price 25 gp

Usage held in 1 hand

Bulk —

Category snare

This snare unleashes a trio of large stones that batter the creature entering the snare's square, dealing 6d8 bludgeoning damage (DC 21 basic Reflex).

Pathfinder Lost Omens The Grand BazaarOGL