This is a Male Universal Connector Charge Adapter. One end has male terminals with a female plastic shell (female Futaba J type), the other has female terminals with male plastic shell (male 2-pin BEC). This adapter goes between the ElectriFly Peak Charger and the receiver pack that needs charging. FEATURES: Red plastic 2-pin connector is a (male) BEC type that plugs into the ElectriFly Peak Charger connector. Black plastic connector is a (female) Futaba J type that also accepts Hitec, JR and Airtronics Z receiver battery connectors. Some transmitter batteries with this same type of connector may be removed from the transmitter and charged the same way. One Black(-) and one White(+) wire are both 24 gauge One year quality guarantee INCLUDES: One Male Universal Connector Charge Adapter REQUIRES: Plugging into proper connectors. SPECS: Length: 3" (75mm) (overall tip to tip) COMMENTS: For the female Universal connector charge adapter, use GPMM3104.