Delphi Packard 56 connectors have been used on lawn equipment harnesses for many years, and a lot of people have no idea where to find them and replacing an entire harness is just not practical.
Cut them off incorrectly and you have installation problems or worse you end up throwing them away. Especially the female ones because they require 2 cuts and they are hard to cut cleanly without leaving a burrs.See the second picture.