Heavy nickel-plated steel handcuffs. With a double-locking system that prevents any further tightening of the cuff on the wrist (after closing the handcuffs on the wrists to the desired size, press with the opposite tip of the handcuff key on the hole present on the edge of the cuff). Sale reserved exclusively for members of the armed forces. Each pair of handcuffs has the production serial number engraved. Gross weight: 295 grams. Made in Spain.