This is the 1/8 scale Offroad Compact Starter Box from Ofna. The universal design allows for use with in-line or side mount positions. For use with 1/8 scale offroad vehicles. Compact design Powered by two 7.2 volt stick packs w/standard connectors or a 12 volt battery source when using the included adapter 750-size electric starter motor Adjustable front chassis support Built-in handle Universal design allows for use with in-line or side mount positions One assembled starter box One hardware bag that includes rubber feet, screws, instructions and an adapter for using a 12 volt power source. Installing rubber feet and attaching two 7.2 volt stick packs or 12 volt power source. Length: 318mm (12.5") Width: 121mm (4.75") Height: 76mm (3.00") When using two 7.2 volt batteries, they are wired in series. This doubles the voltage, making the sum 14 volts. NNA 10/05/04 ir/jxs &