Assaults on police officers and drug related violence have steadily grown in recent years, requiring handcuffs that can be applied with speed and confidence to minimise the risk of injury to both the police officer and the criminal. Hiatts Handcuffs have 19 locking positions and a standard double locking mechanism. Reinforced steel swivels on a chain handcuff and heavy-duty rivets make Hiatt handcuffs rugged enough for police service. Each set of handcuffs is serial numbered and is provided with two standard handcuff keys. Hiatts steel based handcuffs exceed the rigorous strength and quality standards as laid down by the United States National Institute of Justice.