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

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!