You are buying a set of two stainless steel wrist or ankle cuffs. These cuffs have two styles. that is held in place with a Philips head screw from the inside of the cuff.
These cuffs are made from roughly 1/8inch thick stainless. Please see the different available sizes for interior length and width measurements.
These cuffs secure with a small hex screw that is integrated into the locking tab on the side opposite of the hinge. The cuff locks when the hex screw is screwed into a small grove on the lower portion of the locking tab, thereby preventing the cuff from opening.
Each cuff can be removed by giving the screw 1-2 turns with the included hex key. Please do not fully remove the hex screw, as re-inserting it can be a pain & it can easily be lost if dropped.