Inexpensive Speaker Plugs for Vintage Receivers (Akai, Pioneer, etc.)

Stereo-Receiver of the 1970-80s often have these plugs for the speaker-terminals.
Problem: the plugs are always missing and not easy to get.
Here is a inexpensive and working replacement.
Buy 4 Pieces of "DIN Speaker Adapters for Car-Audio". The bigger metal pins fit. Print 2 of the plugs. Put it together: Ready!

Pros: affordable, available, working
cons: maximum diameter of the speaker cables: 1.5mm

Akai Part No.: EJ551316 Consent, Speaker P0409
Pioneer Part No.: K72-007-B Speak