Here you will receive a pair of extremely heavy handcuffs. A piece of handcuffs weighs approx. 1.15 kg. The total weight of both is over 2.3 kg. The shackles are opened with a special lock. The lock is locked on the inside and not visible. When opening, the lock is pulled out with a special key. The keys are different. 3 keys are supplied per handcuff. The inner diameter is 56x65mm. The material thickness is 15-16mm. The material height is 4cm. Material matt polished stainless steel.