Our handcuffs' manufacturing started in 1992 under the brand ZH BREN Brno with the models RALKEM 9921 and RALKEM 9922 where the double lock is actuated by a tip of the key. Later on, under our company ALFA - PROJ brand similar models RALKEM 9924 and 9927 were added, double lock being activated by finger.
This Transport Belt is a simple length of leather with slots and a hasp. The chain is a loop. One point of the chain is fixed to the hasp. Once the belt has been applied, the chain is pulled THROUGH the hasp and the cuffs are then passed through the chain loop. Once locked on, the chain cannot be moved back out of the hasp and thus the belt is locked on.