This is the Ultimate Racing 1/8 off road starter box. 
The Ultimate Racing Starter Box is a lightweight and compact professional starter box that has been designed for 1/8 off road cars. Its adjustable pins allow this box to be compatible with most of 1/8 off road cars. 
The CNC-machined aluminum housing and top plate have a high-quality black coating for extra durability. 
This starter box has two powerful ventilated electric motors, making it one of the most powerful and resistant on the market. 
This box has been designed to accommodate two standard 7,2V Ni-Mh or 7,4V LiPo batteries. 
It has a safety switch, external connection for charging batteries or connecting chargers, and the wiring necessary for the two types of batteries. 
The Ultimate Racing Starter Box comes fully assembled ready to use with an integrated ergonomic handle for comfortable carrying.