"Machinery often has moving parts – whether it’s rollers, gears, belt drives or conveyers – that create potential pinch point, entanglement and crush hazards. Interaction with these hazards can be devastating: mangled fingers, broken bones and crushed bodies. Crush and entanglement hazard safety labels help remind people to take proper precautions to avoid accidental injury. Because the orientation of moving parts and how someone could interact with them varies greatly, we offer a variety of symbols to choose from to best fit your potential hazard."
https://www.clarionsafety.com/Crush-and-Entanglement-Hazard-...