Chinese bad-dery clamp

I've been playing with cars for 30 years and never knew there was a difference between pos. and neg. clamps.
I know the battery posts are different sized. Just assumed the ones that were too big, as above, were …….I dunno. I just used what I had handy, and half the time I found the correct one. Do auto part stores sell Positive and Negative clamps?
My dart has the original cable integral with the terminal.

I understand. Lots of people don't know and a LOT of the terminal ends you find are the same size, even though the posts are different. You have to look for the smaller size.

Keep in mind too, as trailbeast pointed out, those clamp on terminal ends are made to be only temporary. The whole cable really should be replaced.