Unknown part when assembling new tap

[phloaw]

Hi, I just received by post a new tap (single lever mixer) for my kitchen sink.
One of the components in the box left me scratching my head: see attached image.

Could anyone help me understanding what that is/does, please?
Thanks!

 

[ShaunCorbs]

It’s the weight for the removable spout / spray

 

[phloaw]

It’s the weight for the removable spout / spray

Of course!
Thank you!

 

[Aire]

It’s the weight for the removable spout / spray

I wonder if it would be displayed in the instructions

 

[phloaw]

I wonder if it would be displayed in the instructions

No instructions provided at all

 

[Rob Foster]

No idea ..but is it inside the packing ..chking