Motor operating voltage 3-6V
This duct is a DC gear motor wheels + 1 = 1 set is sometimes black leader.
Because the motor and wheels are injection mold duction, the duction cess is inevitable scrap
And other defects, if the wheel shape and material requirements are very high, more demanding
Customer please do not buy wheels Diameter 65MM width 27MM
Our default is Double Motor reduction ratio of 1:48