Review on CTA Tools 5077 Brake Caliper Optimization File by Michael Reese

Total junk, this file's teeth dulled the first time it was used. I couldn't finish cleaning 1 caliper before noticing a file problem. Received this file today the same day as this review and was happy to use it for brake work. On first use, the file came off the grate like butter; However, when I moved to the other side of the caliper bracket, I noticed that the file was barely removed. I quickly checked the file and noticed that the teeth were blunt and round. When I started the 2nd caliper brake the file seemed to slide across the rust removing almost nothing. That was it and I was done with my old files.