Quality assurance: Each wheel undergoes three inspection processes from material to wheel, ensuring a 99.9% pass rate Specific features: The outer side of the wheel is in the shape of an artificial wheel, with colors of yellow and black, giving it a more three-dimensional feel Good performance: Rubber coated wheels with smooth operation and better grip Carefully designed: The four-wheel drive intelligent vehicle can achieve motion modes such as left and right translation, large angle drift, inclined 45 ° direction movement, square track movement, etc Wide application range: This robot's McNamm wheel is compatible with building blocks and TT motors, and four-wheel drive intelligent vehicles can achieve motion modes such as left and right translation, large angle drift, inclined 45 ° direction movement, square track movement, and so on The robot's wheel is compatible with building blocks and TT motors Colour:yellow+black Material:ABS Size:Diameter: about 48mm Package Contents: 4 x Car tires Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.