Description:Note that ±1 mm error of body size is acceptable, but not the shaft diameter and length.The 775 dc motors have a standard size of 66.7 x 42.0 mm. The 42.0 is the outer diameter as the motor is cylindrical, wheres 66.7 mm is its height.The number 775 stands for this standard size. It is in the same fashion to the number with 130 /140 /180 motor.High Quality Branded Product.
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