I'm trying to make my mountain bike that I've had since I was a teenager street-legal for the city, so I need to add (large) reflectors to the front and and back.
I understand how to attach the back one:
https://www.bikesomewhere.com/sunlite-reflector-sunlt-rear-only-3in-rf202rdh (around the back stem, easy enough)
But what is the front one supposed to be attached to?:
https://www.bikesomewhere.com/sunlite-reflector-sunlt-front-only-3in-rf001wthThe description says "Front uses a brake bolt mount", but I don't understand what that means.