Abloy is a Finnish lock manufacturer. They make locks that use wafer disks as well as high-security locks. They do not make handcuffs, but as you can see, this does not stop others from making cuffs taking advantage of their special lock cylinders:
Unfortunately, the website, located here, is in German, but there are lots of photos documenting the process of making these cuffs as well as more pictures of the final product.
This is a great looking set of cuffs!