IntroductionThis mecanum wheel metal robot car chassis is very solid. With the help of controller, you can DIY a smart car chassis with the mecanum omni directional wheels. You can let the car move left, right, forward, backward, or other directions.Car Parameters:Frame material: AluminumSize: 10*29*33cm / 3.94*11.42*12.99inchWheel ParametersName: 97mm Mecanum WheelMaterials: high quality plastic, rubber(roller)Weight: 150g / 0.33lb (1pc wheel)Inner diameter: 8mm / 0.31inchOuter wheel diameter: 97mm / 3.82inchThickness: 37mm / 1.46inch (without couplings)Number of sub-wheels: 9Bearing capacity: can bear 0-10kg(4pcs wheel together)Motor Parameters:rate volate: 12vrated power: 4.8wtype: brush DC motorstall current: 2.8mAstall torque: 10kgf.cmrated current: 360mArated torque: 1kgf.cmoriginal speed: 110000rpmreduced speed ratio: 1:30encoder voltage: 3.5-5vpluses: 6pcs/circleline speed: 150Shipping List:1set Metal frame4pcs 97mm mecanum wheel4pcs 37 DC motor1set Screw kit