ENGINEER PA-09 Precision Micro Connector Crimping Pliers 175mm. Made in Japan. Crimp AWG #32 to #20 Wires across 100 Different Terminals & D-Sub Connectors Contacts

https://a.co/d/0iNxdn5k I believe I have these, they work great. Crimping is very much a technique thing when doing it by hand, but having the right tools makes it possible.