Do you mean the light is bolted or the light bracket? If the latter Smart's 2W rear light is excellent. I have had one on my bike for several years now in all weathers with no issues.
The light itself. I want a rear light that requires tools to take off. Prefer it to be mounted to the seat post since lights on race blades won't be such a great idea.
Any tips for a cheap rear light that's bolted (!!!) to the seat post?