Metal chains with balls (IDF Merkava)

Scale 1/35
Unknown brand
Metal chains with balls

Real metal parts that represent full cast chains with a ball on the end.
Not exactly sure were they are ment for.
WW2 Allied Flair tank?
Modern anti magnetic mine protection?

*EDIT* A friend pointed out that this could be the chains and balls used on the Israel Defense Force Merkava tanks

Price is for the complete set that is shown in the pictures.