Bill Houghton, yes the ends had a prong or 2 on the inside, so when you crimped it, the prong would make contact with the wire,
if you did not crimp it even, like with a regular pair of pliers, you may distort the prong and it would not pierce into the wire and
you stood a good chance of not having continuity between both ends of your wire.
that pair shown on here, looks wide enough to cover the whole terminal and make an even crimp.