Pliers for these Corbin-type spring-type clamps on automotive hoses, like radiator hoses:
https://www.summitracing.com/parts/rnb-13400
Here’s a discussion about this specific tool:
https://www.garagejournal.com/forum/archive/index.php/t-156915.html
The Southeast Seattle Tool Library
http://setools.org/
4425 MLK Jr. Way S #100http://setools.org/
In a garage behind the building at the SW corner of MLK and Genesee
Seattle, WA, 98108
USA
202 780 7296