From Pathfinder Society Scenario #2-13: A Gilded Test, which isn't enabled.

Mechanical Jaws (1-2)

HAZARD 0

MECHANICAL TRAP

Stealth +6 (trained)

Description Mechanical jaws bolted to the stone beneath a camouflaged floor tile.

Disable DC 12 Thievery (trained) on the jaw mechanism.

AC 14; Fort +8, Ref +2

Hardness 5, HP 14 (BT 7); Immunities precision, critical hits

Jaws

Trigger A creature walks on the tile.

Effect The jaws of the trap snap shut, Striking the triggering creature. The triggering creature is Immobilized until the trap is disabled or a creature succeeds at a Athletics check to Force it Open. A creature who critically fails the check to Force it Open instead tightens the trap, dealing 1d6+3 piercing damage to the immobilized creature.

Melee Jaws +10, Damage 1d6+3 piercing

Pathfinder Society Scenario #2-13: A Gilded TestOGL