A very convenient set of 5 types of charger connectors. 1. The most commonly used charging adaptor for T-type Connector (4mm banana pin for connecting the charger). 2. Charging Adapter for the Pocket Booster Type (The end is black) 3. Charging Adapter for the Receiver Connector Type (Futaba/JR) 4. Charging Adaptor BEC Connector Type 5. Multi-purpose Aligator Charging Clip (Convenient for charging the shield battery, etc)