This is the Great Planes ElectriFly JST 2-pin to standard connector adapter.
Features: Connects a battery having a Standard Male connector to an ESC or a charger having a JST Male connector
Includes: One battery adapter
Length: 101mm (4)
Connector #1: Standard Female (Terminal Gender- Female, Housing Gender- Male)
Connector #2: JST Female (Terminal Gender: Female/Housing Gender Male)
Note: Important Note: The gender of a plug is determined by the terminal not the housing.