handcuffs

käsiraudat|p puhekieltä A fastening consisting of two metal rings, designed to go around a person's wrists, and connected by a chain or hinge.
2014, Ian Black, "http://www.theguardian.com/world/2014/nov/27/-sp-courts-jordan-crush-support-isis Courts kept busy as Jordan works to crush support for Isis", The Guardian, 27 November 2014:

Security is tight inside and outside the building, guarded by a bewildering collection of soldiers, policemen and gendarmes. Relatives watch as prisoners in handcuffs and leg irons shuffle past.