Figure-8 stainless steel handcuffs (5mm thick·skull key)

These are stainless steel figure-8 handcuffs built in the same shape as police cuffs. Both wrists are locked together, and a key with a skull shaped grip releases them. The supplier states that this is an item made for adult use, not enforcement equipment.

5mm thick steel plate

The thinnest part of the steel plate is 5mm, and where two plates overlap it is 10mm. The supplier explains that the edges are dressed down so the cuffs do not dig into the skin when they are on. They have real weight, so you feel them clearly on the wrists.

They go on the ankles as well

The tongue of the latch extends about 5cm, so for people whose ankles are not thick they double as ankle restraints. Where on the body you lock them changes how far the ratchet closes.

Two skull shaped keys

The key grips are shaped like skulls, and the product photo shows two keys together. Nothing opens these without a key, so it is best to decide where the keys go before you lock them. Keeping one within reach and the other in a set spot in the room covers you if one goes missing.

What to know before you use them

Unlike leather cuffs, metal cuffs tighten the harder you pull. The supplier also states that the person wearing them cannot open them or break out on their own, so key management is safety itself. The supplier further specifies that it takes no responsibility for use outside the safety guidance.