UMC-J1772 is the manufacturer of the original TeslaTap and also many different Tesla compatible connectors and accessories.
These connectors are used by many builders of Tesla adapters and extensions.
UMC-J1772 was the first manufacturer of these commercially available Tesla compatible adapters.
The owner of UMC-J1772 is willing to answer any of your question. Email or call Dave
Phone: (805) 886-5213 (Pacific Time Zone)