As far as we can ascertain, this is a unique product, indeed our expert advisers tell us that a product using this combination, was never made in the 'darby' era. Comprising a neck collar joined with 20 cm of chain to a pair of handcuffs (916) which are in turn linked to a pair of leg irons (918) with a further 60 cm of chain.  Prisoners have the burden of an extra 1.8 kilograms (4 pounds) of heavy metal.  Not a recipe for high speed escape!  Please see individual sizes of the leg and handcuffs in their separate descriptions.  

Apologies, we are not allowed to export leg irons outside the European Union.