Custom Smart car an inch small robot omnidirectional wheel guide wheel caster Smart Car Robot DIY Toy

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Mounting height 35MM
 
13MM wide wheels
 
Wheel diameter 24MM
 
Screw M4 (M3 screws can also be used)
 
Backplane 32MM * 37MM
 
Center Hole 23MM * 29MM
 
This data is in the owner manual measurement, there will be some errors