Feature:1. For TT motor has no welding plug, users do it by themselves, versatile and convenient2. The outside of the wheel is an artificial shape, the color use yellow and black, and the appearance is more threedimensional3. The rubbercoated wheel is made of rubber material, which bring smooth running and better gripping ability4. Allow the fourwheel drive smart car to realize left and right translation, largeangle drift, tilt 45 direction movement, square track movement and other movement modes, very practical5. For TT motor adopt all environmentally friendly materials, equipped with goodquality carbon brushes, strong magnetic core, with shielding ringSpecification:Item Type: Mecanum WheelMaterial: ABS, rubber, copperPurpose: DIY smart car, small robotWheel Parameters:Diameter: Approx. 48mm / 1.9inCoupling Type: For TT couplingMotor Parameters: Working Voltage: 3V12V DC (recommended working voltage is around 6 to 8V)Torsion: 0.8kg/cm (at 3V)Reduction Ratio: 1: 48Load Current: 70mA (250mA maximum)(at 3V)VoltageNo-load currentNo-load speed6V200mA20010% rpm3V150mA 9010% rpm.Package List:1 x Left Wheel1 x Right Wheel2 x Motor