Unyielding, biting, cold, heavy, steel restraints are probably the most popular aide for bondage games. A heavy design makes it incredible to wear.
Hand restraints as they were probably used in the African slave trade. Each with a robust eyelet for attaching chains. The solid slave hand restraints can be locked with a padlock, easily and effectively.
Two sizes available: “small”, for a maximum wrist size of 6 cm (2 1/3 inch), and “large” for a maximum wrist size of 8 cm (3 1/5 inch)