These hinged handcuffs are made from highly resistant stainless steel. It is medically sound and does not cause skin allergies (as compared to handcuffs with nickel or chrome surface cover).
The two parts of the handcuffs are connected by a stainless steel hinge which allows them to open only within the 180 degree angle. The construction of the handcuffs significantly restrains the detainee's hand movement and minimizes the risk of unwanted unlocking of the handcuffs. The key holes are positioned in the direction of the detainee's body and are therefore completely out of reach of their hands.
The handcuffs have a double lock. After locking them, the lock can be blocked by pressing a peg on the side of the handcuffs with the tip of the key. This mechanism also prevents further tightening of the handcuffs on the wrists. They are supplied with a pair of keys (standard universal key).
