These are charger leads that will connect your charger to your battery.
On one end is the 4mm Bullet Plug (also known as Banana plug) which will plug into the output ports on your charger. On the other end is the Traxxas style Male which will plug into your battery that has a Traxxas Connector installed.
High Quality Wires and Plugs, 14AWG Stranded Wire
Approx. 10" Total Length
Note: Be sure that your charger has 4mm Output Ports for charging.