I own 2 pair of channel lock pliers. My 440's have some very specific uses, and a lot of general stuff I couldn't accomplish as easily with a lesser tool (for example, they work great for compressing single piston brake calipers).
But if there is one tool in my entire collection that I would be lost without, it is the pair of 420's below. If something ever happened to these pliers, I'd go ahead and hand the rest of my tools off to my sons now, and quit wrenching. I'd loan anything else in my box to my next door neighbor, but if I was working next to somebody and he said, "lemme borrow those channellocks..." I'd walk back to the truck/toolbox and find another tool to hand him instead.
I'd LOVE to find another set exactly like these, I'd probably buy about 3 more sets just in case. BUT I can't find any exactly like them. Channel Lock's current lineup is either straight jaw or V-jaw. I can't find any with the nice smooth curve these have to them. And I can't find any more with the teeth as deep as mine are. The new ones are a lot more shallow.
If anybody can help with an ID and/or a source for these, you MIGHT just wind up with a new pair in your mailbox compliments of a very grateful Tynee.