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: Once locked, they remain rigid, offering a high level of security that is difficult to manipulate without the specific threaded key.
: Because they are rigid and can be heavy, it is vital to monitor the wearer for numbness, tingling, or skin irritation.
Due to their rigid nature and lack of modern quick-release features, Darby restraints require :
: Ensure there is enough space (typically one finger's width) between the metal and the wrist to prevent nerve compression. Bondage Darby Style Handcuffs - High Quality SM Restraints