From Pathfinder Adventure: Crown of the Kobold King, which isn't enabled.

Pendulum Blades

HAZARD 3

Stealth +10 (expert)

Description Several swinging pendulums mounted with razor-sharp blades extend from the ceiling and slice into the room below.

Disable DC 20 Thievery to jam the gears and prevent the trap from being activated

Swinging Blades (attack)

Trigger This trap must be manually activated by a creature adjacent to the southwest gear stack;

Effect Blades swing down to strike at all creatures in area F2 before wrenching to a frozen halt against the opposite walls. All creatures in the central part of this room take 6d6 + 3 slashing damage (DC 20 basic Reflex).

Pathfinder Adventure: Crown of the Kobold KingOGL