100% Brand New.
   Size: 22 x 12xm(L x W);
    Wheel Size:6.5cm (Dia.) x 2.7cm (H)
    Mechanical structure is simple, it is easy to install.
    This car is the tachometer encoderWith a 4 AA battery box. (Batteries not included.)
    Can be used for distance measurement, velocity.
    Can use with other devices to function as:
    tracing bot,
    obstacle avoidance,
    distance testing,
    speed testing,
    wireless remote control.
    Note: motor power supply is 3V~6V. All the parameter above is tested without load.

Package Includes:

    1 x Car Chassis
2 x Gear Motor
2 x Car Tire
2 x Speed Encoder
2 x Fastener
1 x Universal Wheel
1 x Screwdriver
1 x Battery Box (Batteries not included )
All Necessary Screw And Nut