Specialty tool...anyone know what it is?

My ex-FIL gave me a bunch of tools before he passed away. These are probably from the 70s-90s. I was re-organizing the other day, and cam across this, decided someone here might know what it is. From the blue handles, I think they're Channel Lock brand. Seems like some type of puller, not sharp enough to be cutters.

Anybody know?
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Thanks!
Steve