This is the Duratrax Banana Charge Leads to XT90 Battery Connector.                                                                                        FEATURES: Connects a battery with an XT90 connector to a battery charger                          with 4mm diameter female banana output jacks                                          One year limited warranty through Hobby Services beginning at date of                   purchase. Warranty valid in the U.S.A. and Canada only                                                                                              INCLUDES: Duratrax Banana Charge Leads to XT90 Battery Connector                                                                                                SPECS:    Length: 4" (102mm) not including connectors                                          Battery Connector: XT90                                                              Charger Connector: 4mm diameter male banana jacks                                    Wire Size: 14AWG