Processing:
The product is well made, ie no burrs, no roughness when painting, etc ...
When open, it does not act a bit wobbly and unstable, in the closed state.
Which metal the handcuffs are made, I can not say unfortunately, just as durable is the chromium alloy during use. (Caution for nickel allergy sufferers)
Data:
The inner diameter is 6cm, 0.5cm and the thickness of the material so that the outer diameter of 7cm.
Thus, the inner circumference is 18,85cm. To find out if these handcuff a really fit, so you should trim your 18,85cm long piece of paper and wrap around the wrist: The paper should be able to just turn around the wrist, but should not be cast off over the hand.
The O-ring has an inner diameter of 2.5 cm and is screwed to the bracelet. This gives a better stability to a rotating joint which can jump out of the socket, but on the other hand you can by repeatedly turning the arms from every bondage free (hence a star deduction).
Function:
The closure work and remains in jerky movements as amended (with a slap on the palm of the pin remained in his position). The delivery contains a total of three pins at: Two are required for closing, with the third one can open the lock and use it also as a spare, just in case something is lost. The lock can be opened with other thin objects by pushing out the locking pin from the other side. For this, you can for example use a protruding pen refill.
Conclusion:
For this price you get an unbeatable quality. However, one should be aware that at any time can get out of bondage itself.