Features Simple Mechanical Structure: Enjoy hassle- assembly with a user-friendly design, making it for beginners and enthusiasts alike Powerful 4WD Motors: Experience enhanced performance with 4 decelerated DC motors that deliver impressive power and precision in direction control Stable Large Chassis: Benefit from a robust chassis that ensures stability during , allowing for easy expansion and additional features Features: 1、Simple Mechanical Structure: This smart robot cart kit adopts a simple mechanical structure and is very easy to install. 2、4 Decelerated DC Motors: This smart robot car kit is powered by four deceleration DC motors with high power and good directionality. 3、Large Chassis: This smart robot cart kit uses a large chassis to make the cart ride very stable and very easy to expand. 4、Multifunctional: This intelligent cart comes with multiple functions, with speed port, servo port, tracing, barricade fixing position, etc.; it is convenient for you to expand your experiments. 5、Speed Code Plate: This intelligent car comes with a speed code plate, which can be matched with an optoelectronic system to quickly form a set of speed measurement system. Specification: Item Type: Smart Robot Car Kit Material: Acrylic Battery: 4 x AA Alkaline Dry Battery ( Shipped Without Battery ) Features: With four deceleration DC motor turning flexible, good directionality. With four drives, horsepower is solid. Chassis is large and stable and very easy to expand. Package List: 2 x Trolley Chassis 4 x DC Gear Motor 4 x Yellow Wheel 4 x 20 Wire Speed Dial ( Not Ordinary 6 Wire 10 Wire ) 8 x Fastener 24 x Screw 16 x Nut 6 x Copper Post 1 x Battery Box 7 x Wire Package List 2 x Trolley Chassis 4 x DC Gear Motor 4 x Yellow Wheel 4 x 20 Wire Speed Dial ( Not Ordinary 6 Wire 10 Wire ) 8 x Fastener 14 x Screw 10 x Nut 6 x Copper Post 1 x Battery Box 7 x Wire