Item Type: Mecanum Wheel Material: ABS, rubber, copper Purpose: DIY smart car, small robot Wheel Parameters: Diameter: Approx. 48mm / 1.9in Coupling Type: For TT coupling Motor Parameters: Working Voltage: 3V12V DC (recommended working voltage is around 6 to 8V) Torsion: 0.8kg/cm (at 3V) Reduction Ratio: 1: 48 Load Current: 70mA (250mA maximum)(at 3V) VoltageNo-load currentNo-load speed 6V200mA20010% rpm 3V150mA 9010% rpm Package List 1 x Left Wheel 1 x Right Wheel 2 x Motor 1For TT motor has no welding plug, users do it by themselves, versatile and convenient 2The outside of the wheel is an artificial shape, the color use yellow and black, and the appearance is more threedimensional 3The rubbercoated wheel is made of rubber material, which bring smooth running and better gripping ability 4Allow 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 practical 5For TT motor adopt all environmentally friendly materials, equipped with goodquality carbon brushes, strong magnetic core, with shielding ring