First is a symmetric plug.
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Second is without markings, See different end, with one side flat and the other round. Third is probably identical to the 2nd.
These are for electronic devices, but please consider which plug fits your need.
Each for $2 at pick-up from home on southside RVA not far from downtown. 2 for $3 or all 3 for $4.
Emails ONLY to arrange pick-up. no calls, texts nor deliveries made.