RS550 12V 35000 motor Most children's wheels use motor power Specially customized for car modification size width x depth x height Gear is not equipped with motor but included separately Specifications: Rated voltage: 12V Speed: 35000rpm Application: In most children's motorized wheels, can directly replace 550 motor Color: silver Material: metal Package Contents: 2 x 12V RS550 35000rpm motors 2 x 10 teeth 10mm gear 2 x 10 teeth 8.5mm gear Only 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 to be slightly different from the real thing. Measurement allowed error is +/- 1-3cm