A. The crawler robot chassis is made of high-strength aluminum alloy, which is strong and durable. This robotic tank chassis kit comes with a metal frame that is not easy to break. And the panel is sandblasted and oxidized. B. This tracked robot car chassis has low noise and is easy to control, suitable for beginners to learn robotics knowledge. It is suitable for students to learn Arduino/Raspberry Pi/microbit. In the manual, Arduino code will be provided. C. Motors are the core of the robot tank chassis. The RC tank chassis is equipped with 4 high torque encoder DC motors, with strong magnetic band and anti-interference, making it easier to walk in harsh ground conditions. It can get speed feedback through Arduino UNO R3/Raspberry Pi/Micro-bit programming. D. This tank chassis kit is suitable for makers, school students for robotics learning, STEAM education, teaching, competitions and research projects. It can help improve ability and expand thinking by assembling and designing robot cars. It is a good gift for friends/family/teens interested in robotics. E. This TT04 robot tank chassis kit includes 1pc metal frame, 2pcs plastic driving wheel, 2pcs plastic Bearing wheel, 2pcs engineering plastic tracks, 4pcs TT DC motors and 1set screws & tools. Sizes: 7.6 x 6.4 x 2.4 inches. F. Any question about the tracked tank chassis, please do not hesitate to contact us, and we will reply as soon as possible. G. Wing TT04 Intelligent Robot Tank Chassis Kit is an educational learning kit designed for beginners. It is an integrated solution for robotic learning and education. It is ideal for makers, school students for robotics learning, STEAM education, teaching, competitions. It helps improve logical thinking, mechanical and electrical abilities, and allows learning how to build and program fully functional robots. H. Product Parameters: Name: TT04 Robot Tank Chassis; Size: 7.6*6.4*2.4 inch / 193*163*60 mm (length*width*height); Motor: TT DC motor; Code Disc: Plastic; Driving & Bearing Wheel: Plastic; Crawler: Engineering plastic, wear-resistant, detachable to any length; Working Voltage: 6V; Working Carrying Capacity: 0-3Kg; Note: For more details please download the source code and documentation at gitnova. I. Metal Frame Parameters: Material: Metal; Size: 5.31*2.95*1.38 inch; Feature: Metal material, sturdy and durable. The control kit, motor and battery can be mounted on it. J. TT DC Motor Parameters: Working Voltage: 6V (recommended to be about 3-6v); Reduction ratio 48:1; Strong magnetic band and anti-interference; Voltage no-load current no-load speed. K. Shipping List: 1pc Metal Panel; 2pcs Plastic driving wheel; 2 pcs Plastic Bearing wheel; 2pcs Engineering Plastic Track; 4pcs TT motors with encoders; 1set Screw kit.