Description: A new design of tank chassis, beautiful appearance, fine processing, sandblasting oxidation into golden yellow and silver. All-metal structure, make the tank more solid. In the design of the tank car panel, there are reserved installation space for 9 g steering gear and steering gear, can be used flexibly to install ultrasonic sensors and mechanical arm, etc. And the panel for the UNO R3 and NodeMCU development suite reserved mounting holes, making installation of development board is no longer difficult. In addition, this car panels can be installed 25 mm / 37 mm motor bracket,and also can be installed into a wheeled 4 wd buggy. More surprises, it was designed the two LED lights on the panel. The vehicle looks very beautiful. Under the motor drived, the car can be flexible rotation around. Car carbon brush dc motor has hall sensor, which is used to speed and feedback. As a result, the car can do a lot of things, worth it! Specification: Material: aluminum alloy Surface treatment: sand oxidation Track: engineering plastic Size: 300x220x55mm (length * width * height) Parameters of the Motor (25mm 9 V 150 rpm DC motor, has hall sensor): Name: 25mm motor gear Output speed: 150 10% rpm Charge current no_: 200mA (max.) Stop current: 4500mA (max) Stop pair: 9.5 kgNaN Rated speed: 100 10% RPM Nominal torque: 3000 gNaN Nominal current: 1200mA (max.) Noise: 56dB Working voltage: 9 V External shaft length: 14.5mm Final shaft game: 0.05-0.50mm Package Includes: 1 set Chassis metal bracket 2 Piece Plastic drive wheel 6 Piece Plastic load-bearing wheels 2 Piece Track 2 Piece 9V motor 1 Piece Battery box Screw: several 3 Piece Hexagon wrench 2 Piece Motor power cord 2 Piece LED lights 1 set NodeMCU development board kit