The acid silver cuff is connected by Parts of 4's unique U bolt system. Bolt two cuffs together for a restraint set, or clip together with the binding chain (sold separately), or wear alone. 

Acid silver is achieved when brass substrate is electroplated with silver and then dipped into acid to create the subtly destroyed surface. No two items are the same. Nuances and variations are a characteristic of the product.

Handmade in Indonesia. 

Small = 58.5mm internal diameter 
Medium = 62.0mm internal diameter 
Large = 67.0mm internal diameter