brake switch?

[Irish_prick]

so i found this drum in a set of xs wheels and i've never seen one like this b4
is this a brake switch? is it XS? and so anyone run'n one? like i said i've got other set of drum brake wheels and they dont have it so just ask.

 

[jayel]

brake lining switch 74/76
http://www.xs650.com/forum/showthread.php?p=156400#post156400
http://www.xs650.com/forum/showthread.php?t=15439&highlight=brake+lining+switch

 

[Irish_prick]

thanks!!