This is a pair of female EC3 style connectors from ProTek R/C. The female connector is normally connected to the battery or other power source.
This product was added to our catalog on October 9, 2008
Friday, Apr 23 2021 (2 months ago)
ProTek RC EC3 Style Battery Connector (2 Female)
the whole connecotr folded in when trying to push the pin in. very annoyed that I didn't get to use my car for another 2 weeks due to the ec3 connector failure.