1、High quality plastic tank chassis with alloy body used for making tank toys or robot projects. 2、The track has large grounding area, small grounding ratio, light weight and low noise. 3、The rotational speed of motor reach up to 100rpm, and dual-drive motor provides sufficient power and fast driving speed. 4、The structure of alloy is more stable, it make walk more easily on complex ground conditions. 5、Multiple mounting holes on the robot chassis is easy for you to install other accessory, such as HD camera, Display, etc. Features: High quality plastic tank chassis with alloy body used for making tank toys or robot projects. The track has large grounding area, small grounding ratio, light weight and low noise. The rotational speed of motor reach up to 100rpm, and dual-drive motor provides sufficient power and fast driving speed. The structure of alloy is more stable, it make walk more easily on complex ground conditions. Multiple mounting holes on the robot chassis is easy for you to install other accessory, such as HD camera, Display, etc. There are two types for you to choose,  assembled and not assembled, meet your different needs. Specification: Condition: 100% Brand New Material: Alloy Voltage: 6-12V Motor Rotational speed: 100rpm Optional Type: Assembled, Not Assembled Size: Approx. 28*23.5*10.5cm/11*9.3*4.1in (After Assemble) Package List: Assembled Type: 1 Pack of Tool Accessory 1 * Chassis Accessory OR Not Assembled Type: 9 Pack of Tool Accessory 2 * Track Accessory 1 * Chassis Accessory (Based on your choice)