What is this

[jonnymcenroe]

Found this in my spares boxes. Is it for cable tension? Is it even bicycle related?!

 

[mdvineng]

looks like a brake cable adjuster

 

[KermitGKona88]

Part of this.

 

[jonnymcenroe]

Mystery solved! Thanks.

It must be from the one pictured here on the left of the image.

 

[jonnymcenroe]

If anyone needs this for anything it's yours for postage.