: Never lose the key during a scene, as standard universal handcuff keys will not work.
: 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
Originally developed in the mid-19th century by English manufacturer , Darby handcuffs were the standard issue for police and prison guards before modern "swing-through" cuffs were invented. Unlike modern handcuffs, Darbys do not use a ratcheting mechanism. Instead, they feature:
: Because they are rigid and can be heavy, it is vital to monitor the wearer for numbness, tingling, or skin irritation.
Bondage Darby style handcuffs are a popular choice in the BDSM community, known for their sturdy construction, distinctive design, www.alibaba.com