Abus 83/50 Shackle Collar
https://cdn.prod.website-files.com/69fd47b6fd25e9b4c1f02fce/6a79294db3a0be3fc63ebc5b_8350collar.jpeg
ABUS 83/50 shackle collar. Economical and simple method of securing a chain to a padlock.
Suitable for Abus 83/50 series padlocks.