I use a pair of Snap-on Brake key pliers 70A. I don't know if their still available or not. I don't remember where I got them or when. They've OK for SBC, l6, and VW rings. Evidently they maybe collectible here's a link;

http://www.collectingsnapon.com/pliers/Cotter%20Pin%20Pliers.html

I didn't have clue till I googled them.

Larry


I don't own a vehicle that isn't old enough to drink.