Description

What kind of steel are handcuffs made of?
Handcuffs may be manufactured from various metals, including carbon steel, stainless steel and aluminum, or from synthetic polymers.

Why are handcuffs different colors?
This is actually common practice. Jails/corrections departments will color their cuffs so none of the arresting officers from other agencies accidently walk out with them. Vice versa for other departments as well. I’ve seen orange and red cuffs as well.

What are modern handcuffs made of?
Handcuffs | Security, Restraint & Law Enforcement | Britannica
Most modern handcuffs are made of steel, adjustable to the wrist size, and equipped with an automatic locking device. Disposable handcuffs of nylon are now available; their advantage is that a police officer can easily carry several pairs, for example, at the scene of a riot