The "plier" part of the brake tool is for handling springs on Lockheed brakes- - - -the ones with a single long spring that connects to both brake shoes just below the wheel cylinder. Chevy-only mechanics can almost be excused for not knowing or caring about that system, since they were mostly used on early Ford and MOPAR vehicles.
Jerry
Yup. I've had to use them on trailers and such. The big pliers I've had to use on some Navistar stuff. But, since we were on a Chevy site........
For our modern fleet, an impact gun will get most brakes done. Which will either be what Ford makes, or what International makes. And usually, sockets in millimeter.