Quality assurance: Each wheel undergoes three inspection processes from material to wheel, ensuring a 99.9% pass rateSpecific 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 feelGood performance: Rubber coated wheels with smooth operation and better gripCarefully designed: The four-wheel drive intelligent vehicle can achieve motion modes such as left and right translation, angle drift, inclined 45 direction movement, square track movement, etcWide 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, angle drift, inclined 45 direction movement, square track movement, and so onThe robot's wheel is compatible with building blocks and TT motorsColour:yellow+blackMaterial:ABSSize:Diameter: about 48mmPackage Contents:4 x Car tiresOnly 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.