These are the Venom Uni 2.0 XT60 Male to Dean's Battery Adapters.
Converts batteries with an XT60 connector to a Dean's connector
Also converts an ESC with a Dean's connector to an XT60 connector
Gold plated spring connectors with high-temp nylon housings
Handles up to 60 amps
Five Uni 2.0 XT60 Male to Dean's Female Battery Adapters