Assertion: shackle | /r/HasProperty | strong
Facets:
value: as a safety device
type: PURPOSE
Source sentences:
text: This is where the customer might get confused and think that this shackle is twice as strong…
text: As a safety device, the chains, and consequently the shackles, must be strong enough to keep the trailer connected to the towing vehicle and prevent the drawbar from touching the ground if the coupling should break or become disconnected from the tow ball.