This is a Y connector. It has a male plug on one end with female pins, then Ys out to two female plugs with male pins. Perfect for having your RC receiver power/control two servos or motor speed controllers from one channel.
The HD2 tracked platform is a large, heavy duty tracked robot with the power to pull a truck and climb stairs. A wealth of internal space allows for batteries, controls and an optional computer. Customized version of item TP-200-001.