These are the Female Traxxas Connectors Plugs Only (No Wires).
 

FEATURES: Shrouded wire connections (no shrink tube required)
          Wide surface area, gold-plated terminals
          Reverse polarity protection makes it impossible to connect backwards
          Textured surface for easy gripping
          Compatible with high-current 12-gauge wire
          Secure, positive locking spring loaded terminals for consistent
            contact
          Multiple locking barbs keep terminals secure
 

INCLUDES: Two black female plastic connectors
          Two sets of gold metal pins
          Instruction sheet
 

REQUIRES: Soldering wires to the metal pins