This is a set of Balance Leads all in one which is designed instead of a balance board and balance wire and you can connect this cable to your battery and charger directly to balance your battery voltage.
You can only use one Balance Lead at a time during charging. 
Total Length: 260mm
Connector: JST-XH male (3pin-4pin-5pin-6pin-7pin) 1pc
Connector : JST-XH Female 7pin 1pc
20AWG Silicone Wire