Compatible with: WLtoys A949 A959 A969 A979 K929 1/18 RC Car*This Wheel hex Hub Adapter is 7mm to 12mm*Outer diameter :approx 12 mm*Thickness:4mm*Diameter of the hole:4mm*Please be note this item is only a cooling fan, it does not come with install screw*
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Item# : SPM14730332232
Model # : 3YFJF41